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VACCINE PREVENTABLE DISEASES – WAY FORWARD IN NIGERIA

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1 VACCINE PREVENTABLE DISEASES – WAY FORWARD IN NIGERIA
Prof G. C. Onyemelukwe FWACP, (MON) 19TH JULY 2013

2 VACCINATION POLICY IN NIGERIA SINCE EDWARD JENNER – COW POX
Mandatory for childhood, social mobilization and health education are very necessary. Child Rights Act vaccination is a right. Niger state Assembly passed a bill in 2010/2011 for compulsory polio vaccination of children. Federal government from 2012 purchases all vaccines with donor support of GAVI, WHO, UNICEF, DFID, BILL GATES FOUNDATION, CLINTON HEALTH ACCESS INITIATIVE and other partners. Private sector participation in vaccination. GERIATRIC ACT BY NIGERIA NATIONAL ASSEMBLY PASSED 2009. Abuja Declaration of Africa Union on Tb, HIV and malaria in Africa.

3 TYPE S OF PREVENTIVE INTERVENTION
PRIMARY PREVENTION- AVOIDANCE OF DISEASE OCCURRENCE SECONDARY PREVENTION PREVENTION (EARLY DETECTION AND REVERSAL) BEFORE COMPLICATIONS TERTIARY PREVENTION PREVENTION OR DELAY OF COMPLICATIONS IN ONGOING/ESTABLISHED CASES Hotez P rescuing the bottom billion through control of neglected tropical diseases. THE LANCET (373:P – 1575)

4 UNIVERSAL HEALTH COVERAGE
Access for all to appropriate health services at an affordable cost, with highly cost effective prevention activities and therapies accessible to all citizens; Health care financing system mitigate risk of households falling into poverty or suffering large financial losses because of costly health system . Vaccine security involving all stakeholders is a sine qua non

5 ACCESSIBLITY AND AFFORDABILITY
(a). A wide range of health services, including highly cost- effective prevention activities and therapies, should be accessible to all citizens of a give a Country and (b). The system of financing healthcare should mitigate, as much as possible, the risk that households would fall into poverty or suffer large financial losses as a result of a costly health problem. The Joint Learning Network for Universal Health Coverage chronicles the challenges and successes of specific reforms within countries, providing a learning platform for senior policy-makers and practitioners in more than a dozen countries.

6 GOALS OF VACCINATION Immunity and herd immunity: Herd Immunity is based on the idea that the pathogen will not spread when a significant part of the population has immunity against it. Primary prevention of cancer of cervix and liver possible. Mass immunization. Eradication of disease: World Health Organization coordinated the global effort to eradicate smallpox globally. Endemic measles, mumps and rubella in Finland eradicated. Polio has been eradicated in most countries except Pakistan, Afghanistan, and Nigeria as at 2013. Individual, group, selected vaccination of at risk groups: E.g rabies vaccination for veterinary workers. Therapeutic vaccines or vaccination – anti-IgE vaccines in asthma, anti-cancer therapeutic vaccines e.g. for prostate cancer. Passive delivery of monoclonal antibodies (MoAb) against cancers.

7 FASTER PROGRESS WITH VACCINES TO MDGs (2000-2015)
MDG1: END POVERTY AND HUNGER – Vaccines protect from death, disability, free family finances MDG2: Achieve universal primary education – Healthy to immunized to attend school MDG3: Promote gender equality- Healthy children free women MDG4: Reduce Child mortality- Vaccines prevent 2.5 million child deaths per year, 79% in developing countries, Pneumonia Diarrhea Rota virus) kill 3 million. MDG5: Improve maternal health- Material neonatal tetanus vaccines MDG 6: Combat HIV/AIDS, malaria other disease- Vaccinate HIV positives, Pneumonia, Diarrhea reduce transmission. MDG7: Ensure environmental sustainability – Rota virus vaccination reenergizes safe drinking water. MDG8: Develop global partnership for development - WHO, UNICEF, GAVI, Bill and Melinda Gates, IVAC, CLINTON HEALTH ACCESS INITIATIVE - Parliamentary Advocacy and financing for immunization in Nigeria (PAFFIN) HERFON - Women Advocates for vaccine Access (WAVA) - Nigeria National Vaccine Summit, PAN 2012 - World Pneumonia Day 2011, GAVI initiative from 2000 – Save children lives, access to Immunization.

8 GUAGING COUNTRY LEVEL MDGs ACHIEVEMENT(MIDTERM)

9 VACCINE LANDSCAPE 2000 TO 2020

10 IMMUNOLOGICAL SPECTRUM PRE NATAL TO OLD AGE
NEO-NATAL CHILD HOOD IMMUNE COMPROMISED GERIATRIC IMMUNO-SENESENCE TRANS- PLACEN-TAL IMMU-NITY 1.ROU TINE UNIVE RSAL IMMU NIZA TION 2.BREAST FEEDING 3. TB,POLIO, DTP, Hib, YF, measles ROTAVIRUS pneumococci PREGNANCY HIV-AIDS 3.5million SICKLE CELL DISEASE CHRONIC DISEASES CANCERS Anti-cancer vaccine Monoclonal antibodies (MAb) ASTHMA Anti - IgE vaccines SPECIAL INFECTIONS CHOLERA YELLOW FEVER LASSA FEVER MALARIA SCHISTOSOMIASIS FILARIASIS AVIAN INFLUENZA RABIES/RELATED VIRUS MENINGITIS PNEUMONIA

11 MATERNAL ANTIBODIES IN BREAST MILK PROTECT THE CHILD FROM ENTEROVIRUS INFECTIONS.
Sadeharju K, Knip M, Virtanen SM, Savilahti E, Tauriainen S, Koskela P, Akerblom HK, Hyöty H; Finnish TRIGR Study Group. Pediatrics May;119(5):941-6. Protective high maternal antibiotics in serum and breast milk better in breast fed > 2 weeks . Secretory IgA for mucosal defence of baby . Anti-tetanus transplacental antibodies after maternal immuinization.

12 BREAST MILK ADVANTAGES
SIMPLE OLIGOSACCHRIDES – Binding sites to intercept bacteria entry into intestinal cell. 2. MUCINS – Adhere to bacteria, viruses to eliminate them 3. LACTOFERRIN – Bind iron, unavailable to organisms 4. B12 BINDING PROTEIN – deprive organisms of Vit B12 5. BIFIDUS FACTOR – promotes beneficial Lactobaccilus bifidus growth 6. INTERFERON – In colostrum, antiviral activity 7. FIBRONECTIN – In Colostrum, repair of tissues, minimize inflammation, make phagocytes more aggressive. 8. INDUCER FACTORS – Induce infants immune system 9. ENHANCER EFFECT – higher levels of antibodies, cortisol, epidermal growth factor, nerve growth factor Insulin – like growth factor, somatomedin C, to close leaky mucosal lining of newborn. 10. FREE FATTY ACIDS – damage membranes of enveloped viruses e.g. chicken pox virus 11. SECRETORY IgA IN URINARY TRACT - Lactoferrin, lysozyme found in large amounts in urinary tract of breast fed. 12. Induces increased local production of Lactoferrin

13 CELLULAR DEFENCES IN BREAST MILK
Immune cells abundant in breast milk – white blood cells, leukocytes 40% are macrophages, manufacture lysozyme that destroy bacteria. Lymphocyte 10%. B Lymphocytes produce antibodies. Milk lymphocytes proliferate in presence of Escherichia coli. Produce gamma – interferon, monocyte chemotactic factor.

14 INNATE SYSTEM WORKS WITH ADAPTIVE IMMUNE SYSTEM
Cell mediated

15 FOETAL IMMUNOLOGICAL PROGRAMMING
HELMINTH- AND BACILLUS CALMETTE-GUÉRIN-INDUCED IMMUNITY IN CHILDREN SENSITIZED IN UTERO TO FILARIASIS AND SCHISTOSOMIASIS Indu Malhotra, Peter Mungai, Alex Wamachi, John Kioko, John H. Ouma, James W. Kazura and Christopher L. King J. Immunol Jun 1; 162 (11): 6843 – 8. FOETAL IMMUNOLOGICAL PROGRAMMING Prenatal sensitization to filarial and schistosomiasis in mother induces immunology memory that persists in infancy in 50% of newborns, which leads to reduction of induction of type I T cell immunity induced by BCG for at least 2 – 10 years. Avoid parasite infection in pregnant women. 2. Malnutrition in under 5 poor immunization antibody

16

17 Each case infects 10 A. Each case infects 10 other
MEMORY B CELLS AND MEMORY TH CELLS ARE GENERATED BY IMMUNIZATION AND HERD IMMUNITY INCREASED Each case infects A. Each case infects 10 other other individuals in individuals in a population a susceptible population With 80% immunity.

18 ANTI - IgE VACCINES FOR ASTHMA AND ALLERGY

19 ASTHMA ALLERGENS IN NIGERIA
Dermatophagoides pteronnysinus Dermatophagoides farinae Onyemelukwe et al Egg yolk, egg white Rast specific IgE in Nigerian Okro, frying oil, pepper asthmatic patients. Ann.Allergy 1986;56(2) Pollens Onyemelukwe G. Rast specific IgE to egg Airborne fungi etc. and milk in Nigerian asthmatic patients African J Med. Med Sci 2011;40(7) 51-7 A. Severe Acute: Chimeric IgE Vaccines DNA of Allergenic substances (Derf1) Dermatophagoides farinae ANTISERA to spider bites, jellyfish stings and other allergies. D. CYTO – 003 wing Q beta derived virus like particles VLP

20 OTHER PARASITE VACCINE APPROACH
PARASITES MALARIA VACCINE Phase 3 trials of RTS, S/ASOI Malaria vaccine in Africa Infants (6573 infants). New Engl. J. Med 2012, 367, RTS, S CLINICAL TRIALS PARTNERSHIP REDUCE EPISODES OF BOTH CLINICAL AND SEVERE MALARIA IN CHILDREN 5 – 17 months by about 50%. One month after 3doses all was positive for anticircumsporozoite antibodies. OTHER PARASITE VACCINE APPROACH 1. PARASITE ANNEXINS (found in Nematodes, Trematodes,Protozoa) Annexins bind phospholipids. used T. Solium vaccination of pigs, Giardia duodenalis – trophozoite vaccine of cats, dogs. 2. PARAMYOSIN in muscles of invertebrates, found in Schistosomiasis (SM97) filariasis, Taenia Solium, Echinococcus granulosa produce TH1 response J.Vazquez – Talavera et al; America Society Microbiology Infection and Immunology 2001. 3. Wuchereria Bancrofti GST vaccination for lymphatic filariasis. Veerapathran A et al PLOS Neglected Tropical Diseases 2009.GST (Glutathione – S- Transferase). rWbGST as a potential vaccine candidate against Lymphatic filariasis. 4. HOOKWORM VACCINES – (a) HHVI (Human Hookworm Vaccine Initiative) Na- ASP2tried in Brazil. Peptide-Based Subunit Vaccine against Hookworm Infection (PLOS ONE /article/info%3Adoi%2F %2Fjournal.pone M. Skwarczynski et al.

21 ADVANCES IN TOXOPLASMOSIS VACCINES

22 CANCERS CANCER PREVENTIVE VACCINES 1. HPV ( 17 SEROTYPES) – 16 and 18
70%, other cervical cancer, vaginal, vulva, penile, oropharyngeal cancer GARDASIL – 16, 18, 6, 11 (Quadruvalent) GARDASIL MERCK and COMPANY Age 6, 11 cause 90% genital wart. Made of virus – like particles (VLPS) And correspond to HPV types 6, 11, 16, 18 2. CERVARIX (bivalent) GSK 16, 18. Age 9 – 25 3. HBV Vaccine – children vaccinated at birth CANCER THERAPEUTIC VACCINES SIPULEUCIL – T (PROVENGE BY DENDREON) Use of Dendritic cells. Metastatic prostate cancer – Immune response to prostatic acid phosphate (PAP) Customized to each patient. Leukapharesis of antigen presenting cells (APCs) Dendritic cell cultured with protein PAP – GM – CSF. 3 treatments 2 weeks apart. Antologous vaccine RUSSIA: VITESPAN (2008) Heat shock protein HSPgp96 coupled to Dendritic cell – kidney cancer HEAT SHOCK PROTEINS NEW TECHNOLOGY FOR CELLULAR IMMUNIT. Response to Leprosy, tuberculosis and cancer. Vaccine against MUC-1 Cancer protein ImMUCIN VAXIL BIOTHERAPEUTICS ONGOING RESEARCH ON OTHER CANCER CAUSING ORGANISMS 1. Hepatitis C – PLCC 2. EBV – Burkitt’s lymphoma, NHL 3. KHSV – Kaposi sarcoma 4. HTLVI - Adult Tcell leukaemia 5. Helicobacter pylori – Gastric cancer 6. Schistoma – bladder cancer haematodium.

23

24 VACCINE ACCEPTANCE(BUY IN) IN NIGERIA
CERVICAL CANCER RISK PERCEPTION AND PREDICTORS OF HUMAN PAPILLOMA VIRUS VACCINE ACCEPTANCE AMONG FEMALE UNIVERSITY STUDENTS IN NORTHERN NIGERIA. Iliyasu Z, Abubakar IS, Aliyu MH, Galadanci HS .J Obstet Gynaecol. 2010;30(8): doi: / Of 375 females, 35.5% heard of HPV, 53.9% heard of cervical cancer, 74.0% willing to accept

25 HUMAN PAPILLOMA VIRUS VACCINE: KNOWLEDGE, ATTITUDE AND PERCEPTION OF PARENTS IN SOUTHWEST, NIGERIA
Kola M. Owonikoko, Adeola F. Afolabi, Lawrence A. Adebusoye, Oluseyi O. Atanda. Ref. Medical Sciences and Public Health 1(1)2013; 13 – 19 Interviewed parent and guardians – 51.3% ignorant of vaccines, 89.4% agreed to vaccinate their children.

26 MONOCLONAL ANTIBODIES IN CANCER THERAPY: 25 YEARS OF PROGRESS
MONOCLONAL ANTIBODY PRODUCTS NAME TYPE TARGET CLINICAL Rituximab Chimeric CD20 NHL Trastuzumab Humanized Erb B2 Breast Bevacizumab VEGF Colorectal Alemtuzumab CD52 CLL Cetuximab EGFR Panitumumab Human Abbreviations: NHL, non-Hodgkin's lymphoma; VEGF, vascular endothelial growth factor; CLL, chronic lymphocytic leukemia; EGFR, epidermal growth factor receptor.

27 FDA APPROVED MONOCLONAL THERAPEUTIC ANTIBODIES

28 FDA APPROVED MONOCLONAL THERAPEUTIC ANTIBODIES

29 NIGERIA HEALTH WATCH – YELLOW FEVER SOUTH AFRICA DIPLOMACY
On yellow fever, yellow cards, Nigeria and South Africa Paper protection?? Faking?? Saudi Pilgrims – POLIO IMMUNIZATION, MENINGITIS, CHOLERA, REQUIREMENTS

30 "MEDICINE IS A SOCIAL SCIENCE, AND POLITICS IS NOTHING ELSE BUT MEDICINE ON A LARGE SCALE“ RUDOLF VIRCHOW Nigeria: Vaccine suspicion aggravates measles outbreak in Kano and elsewhere and interrupts polio eradication

31 FACTORS CONTRIBUTING TO INFECTIOUS DISEASE REEMERGENCE AND ASSOCIATED DISEASES    
CONTRIBUTING FACTOR(S) ASSOCIATED INFECTIOUS DISEASES 1. Human demographics and behavior Dengue/dengue hemorrhagic fever, sexually transmitted diseases, giardiasis 2. Technology and industry Toxic shock syndrome, nosocomial (hospital-acquired) infections, hemorrhagiccolitis/hemolytic uremic syndrome 3. Economic development and land use Lyme disease, malaria, plague, rabies, yellow fever, Rift Valley fever, schistosomiasis

32 SOURCE: ADAPTED FROM US INSTITUTE OF MEDICINE, 1997
. 4. International travel and commerce Malaria, cholera, pneumococcal pneumonia 5. Microbial adaptation and change Influenza, HIV/AIDS, malaria, Staphylococcus aureus infections 6. Breakdown of public health measures Rabies, tuberculosis, trench fever, diphtheria, whooping cough (pertussis), cholera 7. Climate change Malaria, dengue, cholera, yellow fever SOURCE: ADAPTED FROM US INSTITUTE OF MEDICINE, 1997

33 LASSA ENDEMIC STATES BAUCHI PLATEAU TARABA NASARAWA BENUE ENUGU EBONYI
ONDO 9. EDO

34 RABIES ENDEMIC IN NIGERIA
Detection of rabies virus antibodies in fruit bats (Eidolon helvum) from Nigeria. Aghomo HO, Ako-Nai AK, Oduye OO, Tomori O, Rupprecht CE. J. Wild Dis Five viruses related to rabies occurs in Africa related to rabies occurs in Africa Obodhang – Sudan Kotoukan – Nigeria Mokola – Nigeria (Shrews) Lagos Bat – Nigeria (fruit bats) Duvenlage – South Africa (man bitten by bat) Epizootic in Zimbabwe 1981 in dogs, cats. Africa is ancestral origin Rabid dogs in Nigeria lack of immunization for dogs. Human diploid vaccine available but in short supply in Nigeria as well as anti – serum. PS STAPH INFECTIONS Engineered genetically StaphVAX (NIH)USA

35 OVER 100M NIGERIANS AT RISK OF YELLOW FEVER OUTBREAK
A. As many as 101 million Nigerians are at risk of a possible outbreak of yellow fever, if a mass vaccination campaign is not carried out, the National Primary Health Care Development Agency has warned. Some 377 local government areas in 25 states have been marked out as high risk areas, indicate an assessment survey of the country. Oyewale Tomori NOTE EBOLA OUTBREAK IN UGANDA Ebola Outbreak in Uganda Fruit bats reservoir. Effects to other African countries including Nigeria. Surveillance and preparedness?? Occurs in Remote villages in Central and West Africa from wild animals.

36 WHO ESTIMATES 20M NIGERIANS HAVE HEPATITIS B VIRUS –SOGHIN
(SOCIETY FOR GASTRO ENTEROLOGY AND HEPATOLOGY IN NIGERIA) Sept Port Harcourt

37 HIV, HEPATITIS B AND C VIRUSES’ COINFECTION AMONG PATIENTS IN A NIGERIAN TERTIARY HOSPITAL
Taiwo Modupe Balogun,, Samuel Emmanuel1, Emmanuel Folorunso Ojerinde Pan African Medical Journal 2012:12:100 HbsAg + Anti-HIV (4%) HbsAg + HIV (28%) HCV + HIV (14.7%) Industrialized countries: HCV 20% acute hepatitis 70% chronic hepatitis, 40% cirrhosis, 60% hepatocellular carcinoma, 30% liver transplants. 15 – 60% normal African positive for one more markers of HBV

38 EPIDEMIC HISTORY AND EVOLUTIONARY DYNAMICS OF HEPATITIS
B VIRUS INFECTION IN TWO REMOTE COMMUNITIES IN RURAL NIGERIA Joseph C. Forbi*, Gilberto Vaughan, Michael A. Purdy, David S. Campo, Guo-liang Xia, Lilia M.Ganova-Raeva, Sumathi Ramachandran, Hong Thai, Yury E. Khudyakov. PLOS ONE July 2010 | Volume 5 | Issue 7 | e11615. HBV hyperdemic (seropravalence 10 – 40%) in Nigeria. As part of West Africa/ Central Africa crescent from Senegal to Namibia. 11% HBV DNA positive. 37 distinct HBV variants belonging predominantly to genotype E(96.4%) Note HBV genotypes are 8- A,B,C,D,E,F,G,H HBV vaccine in program but became available in 2004 5.6% consists of genotype D and G in 5 individuals. 6. HbVA3 probably from Cameroon.

39 TECHNOLOGICAL CONJUGATION OF MULTIPLE ANTIGENS
IMMUNOGENICITY AND SAFETY OF A DTaP – IPV//PRP~T COMBINATION VACCINE GIVEN WITH HEPATITIS B VACCINE: A randomized open-label trial Maria Rosario Capeding a, Josefina Cadorna-Carlos b, May Book- Montellano c, Esteban Ortiz Bulletin of the World Health Organization. All antigens were adequately immunogenic without interfering with each other for the era of combined vaccines - pentavalent, hexavalent, heptavalent. RCDCs for anti-hepatitis B surface antigen titres in sera obtained at 6 and 18 weeks of age from infants in Groups A and B

40 OTHER VIRUSES ROTAVIRUS ENDEMIC IN NIGERIA causing diarrhoea especially in childhood. 2. ZIKA VIRUS INFECTIONS IN NIGERIA: VIROLOGICAL AND SEROEPIDEMIOLOGICAL INVESTIGATIONS IN OYO STATE. J Hyg (Lond) Oct; 83(2):213- 9.Fagbami AH. 3. RIFT VALLEY FEVER VIRUS (BUNYAVIRIDAE: PHLEBOVIRUS): AN UPDATE ON PATHOGENESIS, MOLECULAR EPIDEMIOLOGY, VECTORS, DIAGNOSTICS AND PREVENTION Michel Pepin, Michèle Bouloy, Brian H. Bird, Alan Kemp and Janusz Paweska. INRAEDP Sciences 2010 Epidemic in Kenya 1930, Egypt 1977, West Africa including Nigeria 1988, Arabian Peninsula 2000

41 INFLUENZA SURVEILLANCE JAN – JUN 2013 BY NCDC
946 cases 788 Influenza like (ILI) 156 Severe acute respiratory infection (SARI) 617 processed sample 472 (76.5%) ILI 73 (11.8%) SARI 72 (11.7 negative) 617 IL1 cases, 42 positive for influenza 20 (47.6%) positive for influenza A 22 (52.4%) positive for influenza B 20 positive samples for influenza A (100%) were positive for A/H5N1 subtype 73 processed SARI, 3(4.0%) were positive for A/H1N1 2 (2.7%) positive for influenza b

42 RECOMBINANT VACCINE TO PREVENT H5N1 NOT YET AVAILABLE

43 BACTERIA - PNEUMOCOCCI
PRE-VACCINATION NASOPHARYNGEAL PNEUMOCOCCAL CARRIAGE IN A NIGERIAN POPULATION: EPIDEMIOLOGY AND POPULATION BIOLOGY Ifedayo M. O. Adetifa mail, Martin Antonio, Christy A. N. Okoromah, Chinelo Ebruke, Victor Inem, David Nsekpong, Abdoulie Bojang, Richard A. Adegbola. Plus one 2012, 7 (1) e30548 Pneumococcal carriage 52.5% higher in children (67.4%) than adults 26%, highest in infants < 9 months. serotypes seen: 19F, 6A, 6B, 23F, 11, 15B, 3, 18C, 9V, 14, 15B, 20, 21,7F, 4, 11, 13, 17, 7C, 19A, 21, 4, 12, Nontypables. 3. PCV7 Serotypes – 4, 6B, 9V, 14, 18C, 19F, 23F. PCV10, Serotypes PCV7 + 1,5,7F. PCV13, Serotypes PCV10 + 3,6A, 19A 4. H influenza H1b meningitis eliminated 90% by H1b vaccine. 5. Near elimination of meningococcal C in industrial countries by vaccination

44 PNEUMOCOCCAL SEROTYPES IN ZARIA, NORTHERN NIGERIA
Onyemelukwe G.C and Greenwood B.M. Journal of Infection 1982 ST 1 2 3 4 5 9 10 11 12 15 17 18 19 21 23 25 41 45 46 48 T Mn 51 Pn 20 70 Bc 8 6 7 16 KEY: ST= SEROTYPES Mn= MENINGITIS Pn=PNEUMONIA Bc= BACTEREMIA/ANTIGENEMIA T=TOTAL

45 VACCINES STRATEGIES PCV13 - serotypes
1. Vaccination – pneumococcal conjugate vaccines. (PCV7,PCV10, PCV13 - serotypes 4,6B, 9V, 14, 18C, 19F, 23F, 1, 5, 7F, 3, 6A, 19A) Pneumococcal polysaccharide protein D-conjugate vaccine (Synflorix; PHiDCV). 2. Vaccination-Pentavalent vaccine e.g.DTPw-HepB-Hib (Quinvaxem) Hexavalent vaccine e.g. DTPa-HBV-IPV-Hib (Infanrix hexa) These vaccines are compatible with measles vaccine and induce adequate immunological memory and persistent antibody production against Hib

46 ADEQUATE ANTIBODY RESPONSES OF COMPONENT ANTIGENS

47 PNEUMONIA BURDEN IN NIGERIA
Pneumonia reduction is part of MDG 4 targets 1. Childhood deaths 200,000 under 5 years per year 2. Vulnerable –elderly -Sickle Cell disease -diabetes patients -chronic liver disease patients Nephrotic syndrome patients Measles patients - HIV patients 3. Multiple resistance to antibiotics. 4. Killer organisms. -Streptococcus pneumonia -Haemophilus influenza -Pneumocystis carinae

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49 TUBERCULOSIS: NATIONAL TUBERCULOSIS CONTROL TREND 2002 - 2011

50 TREND OF TB/HIV KEY INDICATORS (2007 – 2011)

51 TREND OF ANNUAL NEW CASES OF LEPROSY DETECTED
(1999 – 2011)

52 NEW TB VACCINES TB KILLS 1.4MILLION PER YEAR
BCG Protection short lived not adequately protective in children especially in developing countries. BCG not protective of latent Tb which occurs in ½ of persons. 3. Recent trial in South Africa of new Tb vaccine MVA85A against protective antigens of TB bacteria Ag85A (Prof Helen McShare, Oxford):Immune response provoked in adults; healthy infants aged 4 – 6 months vaccinated with BCG and then a cohort with MVA85A. Only 17% effects at preventing TB. LANCET Feb 2013 5. More candidate vaccines in progress.

53 BACTERIA – SALMONELLA ,VIBRIO CHOLERA
1. NIGERIA–ENDEMIC FOR SALMONELLOSIS in man, chickens, domestic animals. Can Vivotif ( Typhoid live oral Ty21a) and others control Salmonellosis in Nigeria vis vis the various serotypes in Nigeria 2. SEROTYPE VARIATION IN VIBRIO CHOLERAE EL TOR DIARRHOEA IN NORTHERN NIGERIA. Onyemelukwe GC, Lawande RV. Central African Journal of Medicine 1991: 37(6): Serotyping of Vibrio cholerae organisms causing epidemics in Zaria and environs since 1975 to 1986 shows that Hikojima serotype was prevalent from , but Ogawa became prevalent from 1984 till The internal and external pressures responsible for these selections are unclear. 3. CHOLERA – ORAL DUKORAL VACCINE (FORMALIN KILLED WHOLE CELL PLUS RECOMBINANT TOXIN B UNIT) OR SHANCOL VACCINE(NOT CONTAINING SUBUNIT TOXIN B) CONTROL CHOLERA?

54 AEFI( ADVERSE EVENTS FOLLOWING IMMUNIZATION) – YET TO BE FULLY ESTABLISHED IN NIGERIA AS AT 2013 (AEFI COMMITTEE IN PLACE 2011) FIVE GROUPS OF AEFI (IMPORTANT ROLES OF NAFDAC AND NPHCDA) 1. VACCINE PRODUCT – RELATED REACTION – by inherent properties of product – limb swelling after DTP 2. VACCINE QUALITY – RELATED REACTION eg failure of manufacturer to inactivate a lot of inactivated polio vaccine 3. IMMUNIZATION ERROR – RELATED REACTION inappropriate vaccine handling, prescribing or administration which is preventable .e.g Transmission of infection by contaminated multidose vial. 4. IMMUNIZATION ANXIETY – RELATED REACTION. Anxiety .e.g vasovagal syncope 5. COINCIDENTAL EVENT e.g. fever occurs at time of vaccination due to another infection (TEMPORAL ASSOCIATION) effect national health problem.

55 NIGERIAN CENTER FOR DISEASES CONTROL (NCDC) CUMMULATIVE DATA
COMPARATIVE JUNE JUNE 2013 2012 2013 GEOGRAPHICAL POLIO 1,3 1 3 cVDPV 57 44 13 8 26 9 15 northern states and FCT LASSA FEVER Cases Death 1058 98 892 Edo state and 10 states CHOLERA Deaths 306 4 33 Kwara, Kaduna , Zamfara CSM 916 58 750 30 26 Endemic states MEASLES 7225 102 45,927 272 26 states – 36 states and FCT URTI N/A 269 ACUTE WATERY DIARRHOEA Diarrhoea with blood 495 323 *ROTAVIRUS Not available *YELLOW FEVER not available

56 NIGERIAN NATIONAL YEARLY DATA – 2010 - 2012 (SOURCE WHO)
INFECTIONS FACT SHEET NIGERIAN NATIONAL YEARLY DATA – (SOURCE WHO) DISEASES 2012 2011 2010 CSM 1,206 1,167 4,983 MEASLES 11,061 10,715 2,563 YELLOW FEVER 250 387 570 LASSA FEVER 1,723 1,246 - PERTUSSIS 11,628 10,023 TETANUS 112 113 199 POLIO - WPV 122 62 21 cVDPV 8 35 27

57 Immunization schedule for children U 1year and WCBA
Women of child bearing age(WCBA Imm. schedule 11/01/2019

58 USA 2012 IMMUNIZATION SCHEDULE 0 – 6 YEARS

59 Cumulative RI coverage for all antigens 2005-2012 IN NIGERIA
SOURCE ;NATIONAL PRIMARY HEALTH CARE DEVELOPMENT 2013

60 TIMELINESS OF RECEIPT OF IMMUNIZATION
TIMELINESS AND COMPLETION RATE OF IMMUNIZATION AMONG NIGERIAN CHILDREN ATTENDING A CLINIC-BASED IMMUNIZATION SERVICE. Ayebo E. Sadoh and Charles O. Eregie. J. Health Popul Nutr. 2009;27(3): Vaccine TIMELINESS OF RECEIPT OF IMMUNIZATION Too early On time Acceptably early Delayed No. % OPV1 30 6.7 232 51.7 49 10.9 138 30.7 DPT1 37 8.1 283 61.5 53 11.6 87 18.9 HepB2 12 2.8 94 21.8 45 10.4 281 65.0 OPV2 16 3.8 175 43.8 69 16.0 146 36.4 DPT2 24 5.8 215 51.8 16.6 107 25.8 OPV3 3.9 118 38.7 68 19.0 117 38.4 DPT3 4.5 166 46.7 71 19.9 103 28.9 HepB3 18 5.5 61 18.7 39 12.0 208 63.8 Timeliness of receipt of vaccines among 512 children attending a clinic-based immunization service. Commencement at age above 28days associated with non-completion. VACCINATION CARDS OFTEN LOST OR NOT AVAILABLE/RETRIEVABLE.

61 NIGERIA IMMUNIZATION COVERAGE IS LOW NEEDS TO BE UP TO 90% AND ABOVE

62 UNDER FIVE CHILD DEATH, 1 IN USA = 1744 IN NIGERIA

63 USA HAS ADDITIONAL VACCINES
ROTAVIRUS PNEUMOCOCCI INFLUENZA HEPATITIS A MUMPS RUBELLA(MMR) MENINGOCOCCAL IN ROUTINE IMMUNIZATION SCHEDULE WHICH NIGERIA DOES NOT HAVE BUT NO BCG IN USA

64 NATIONAL STRATEGIC RESPONSE BY NPHCDA WITH STATES AND LGAs
ROUTINE SUPPLEMENTAL MASS IMMUNIZATION BCG and other routine vaccines Polio supplemental Sub-national, MOPV, TOPV, BOPV 2. Cerebrospinal immunization Oct 2011 – 5 states Jan 2012 – 5 states Nov 2013 – 8 states 22.29 million (1 – 29 years) With MENAFRIVAC – TYPE A 3. Measles – All states in 2 phases Phase 1 – 19 northern states. 15.9 million – Oct 2013 Phase 2 – southern states 13.69 million – Oct – 1 week after

65 4. Yellow fever Nov – Dec 2013 Akwa Ibom, Cross river, Nassarawa 5. Neonatal Tetanus Elimination Initiative 39 high risk LGAS Risk analysis i. 130 LGA’s (SE Zone) (SW zone) ii. 95 LGAs (S-S zone) (NC zone) iii LGAs North East zone

66 IMPEDIMENTS TO USE OF VACCINES IN NIGERIA
1. SUPPLY DEMAND BARRIERS Supply inadequate for the large population vis – vis other GAVI supplied African countries. Funding constraints Logistical challenges Lack of leadership to prioritize Inadequate finance to expand to other antigen, other ages(young women) and geriatric population. 2. ACCEPTABILITY Mother education, Cultural barrier by Fathers, Social religious barrier, use of social networks by gatekeepers. Religious resistance = Missed children

67 3. IMMUNOGENICITY ISSUES
Vaccine potency and cold chain ineffectiveness Immunodeficiency of vaccine failed vaccines Non – vaccine type shifts appearance – pneumococci, CVDPV, Non Typable Haemophilus influenza. 4. WEAK HEALTH SYSTEM AND SERVICE DELIVERIES Human resources, Accurate information. 5. SURVEILLANCE, MONITORING AND EVALUATION INADEQUATE – ( LONG TERM FOCUS ON SAFE WATER AND SANITATION)

68 FINANCE AND VACCINE SECURITY
LOGISTICS, TRANSPORT, COLD CHAIN GOVERNANCE Professionals keeping distance from immunisation

69 8. Vaccination of preterm babies with BCG.
WAY FORWARD 1. OSHOGBO DECLARATION: WEST AFRICAN COLLEGE OF PHYSICIANS INVOLVEMENT IN VACCINE SUCCESS, ADVOCACY WITH COPERATION WITH VETERINARY PRACTITIONERS TO CURB ZOONOSES. 2. CREATE A NIGERIAN NUCLEUS TEAM OF VACCINE TECHNOLOGISTS – Vaccinologists in training linked with established World centers. 3. INNOVATIVE PRIVATE PUBLIC PARTERSHIP – FEDERAL GOVERNMENT, STATE, LOCAL GOVERNMENT,NPHCDA, WEST AFRICAN COLLEGE OF PHYSICIANS/ PAEDIATRIC ASSOCIATION OF NIGERIA. 4. GATE KEEPERS NETWORKERS – Gastroenterologists get, update and keep Nigerian surveillance data on infections through gut. Same with respiratory, neurology etc specialists. 5. PRESCHOOL ADMISSION WITH COMPLETE CERTIFICATE OF IMMUNIZATION - KINDERGATEN, PRIMARY, SECONDARY,TERTIARY. 5. MAINTAIN VACCINE SECURITY – Industries, Manufacturers, UNICEF, Accurate and long term forecasts, affordable vaccines, logistics, cold chain maintenance 6. Breast feeding exclusive policy 7. In view of emergence of polio vaccine associated paralysis ( VAPP) as well as circulating derived poliovirus (cVDPV), nation to decide when and where to introduce IPV (Inactivated polio vaccine) alone or as part of hexavalent/ pentavalent or intercalation of OPV at birth with subsequent IPV. 8. Vaccination of preterm babies with BCG. 9. Surveillance epidemiology for disease patterns Serotypes – Meningococci A,C, W135; Vibrio el tor, Pneumococci, Salmonella serotypes vaccination

70 10. VACCINE ACCEPTABILITY AND ACCOUNTABILITY
Serology surveys and data on vaccines for seroconversions national data. Serotype replacement after vaccination by non – vaccine serotypes: Pneumococci H.Influenzae Neglected diseases INTO view in urban and rural areas. 10. VACCINE ACCEPTABILITY AND ACCOUNTABILITY Social marketing expansion Education of mothers and recipients 11. ELIMINATION OF MALNUTRITION (under 5) affects vaccine performance. 12. MICRONUTRIENT DEFICIENCY ELIMINATION Vitamin D induces Tumor suppressor gene (Goubart et al) Vitamin D induces Innate cells and immune cells to secrete Cathelicidin peptides and improves anti TB response Vitamin D and Vitamin A induce expression of p21 (cyclicin dependent Kinase inhibitor p21.) Organoselenium in garlic and brocolli Aqueate. 13. MEASLES study mechanism of measles RNA editing by which it increases number of aggressive proteins, its RNA genome occurs for more virulence. Studies on strategies of evasion by HIV and other organisms. 14. NEW VACCINE DEVELOPMENT – Vaccine TB Vaccine grand challenge. TB vaccine acceleration program . Study of Latent TB granuloma HSP vaccine development, more coverage, low cost. Malaria, HIV, Parasites etc.

71 15. BEFORE TRAVEL – PILGRIMAGE.
Yellow fever vaccination Meningococcal vaccination A,C, W135 Cholera vaccination IPV vaccination for Muslim and Christian pilgrimages 16. GERIATRIC POPULATION, SICKLE CELL AND OTHER VULNERABLE POPULATION VACCINATION PROGRAM 17. MATERNAL TETANUS VACCINATION AND EXPANSION OF MMR in women 18. PREVENT PRENATAL MATERNAL INFECTION WITH PARASITES - TO AVOID FOETAL IMMUNE PROGRAMMING AND POOR BCG RESPONSE. 19.IN COUNTRY MANUFACTURE OF VACCINES MONOCLONAL ANTIBODIES. 20. ENVIRONMENT Improved housing Nutrition Water Sanitation Environmental Tobacco smoke prevention 21. AEFI – Adverse events following immunization monitoring and evaluation in Nigeria 22. ADJUVANT Research : eg Adjuvant to promote TH1/ TH7 for BCG better response and other infections requiring cell mediated immunity response. 23. EXPANSION OF CANCER TREATMENTS AND NONCOMMUNICABLE DISEASES

72 MAGIC BULLET VACCINE – OMNIVALENT, OMNIPOTENT WITH ALL ANTIGENS –
1 OR 2 SHOTS!!!! I HAVE IT


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