CDC Activities at Home & Abroad Stephen M. Ostroff, MD Deputy Director National Center for Infectious Diseases Centers for Disease Control and Prevention.

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Presentation transcript:

CDC Activities at Home & Abroad Stephen M. Ostroff, MD Deputy Director National Center for Infectious Diseases Centers for Disease Control and Prevention

CDC Monitors population health and develops science-based strategies to prevent and control disease & disability Working with & through a variety of public, academic, and private partners Largely non-regulatory Global nature of public health threats requires we work at home and abroad

Although mostly known for infectious disease activities, CDC has major programs in: Chronic disease prevention and control Injuries Birth defects Environmental health Occupational health

1992

Factors in Disease Emergence Population growth & demographic change Technologic change Environmental & land use change Global travel & commerce Microbial adaptation Failure to implement public health measures

Outbreaks with an impact: the last decade 1993: Hantavirus pulmonary syndrome 1994: Plague in India 1995: Ebola: Zaire/Uganda/Gabon/Congo 1996: variant CJD in United Kingdom 1997: Avian influenza in Hong Kong 1998: Nipah encephalitis 1999: West Nile encephalitis 2000: Rift Valley Fever: Arabia 2001: Anthrax 2002: Vancomycin-resistant Staph aureus 2003: SARS 2004: Avian influenza in Asia

What’s changed since 1992? Although every outbreak is local, any outbreak can be global Public health now tightly linked with public security Revolutions in: information/biotechnology/genetics Linkage between human and animal health

2003

PHYSICAL ENVIRONMENTAL FACTORS SOCIAL, POLITICAL, AND ECONOMIC FACTORS Human Microbe GENETIC AND BIOLOGICAL FACTORS ECOLOGICAL FACTORS

CDC’s Response to SARS In the USA, only 8 cases of confirmed SARS infection However, the response was extremely complex…

CDC SARS Response 866 staff on work teams, in lab, in support role, or in field role 45,865 person-days (or work-years) $18.4 million in salary costs alone

Marcus Emergency Operations Center

SARS (135 days) MARAPRMAYJUNJULAUGSEPOCTNOVDECJANFEBMAR Monkeypox (64 days) Domestic flu (40 days) Avian flu (42 days) Activation of CDC’s Emergency Operation Center March 2003—March 2004 Total days activated for outbreak response = 281

CDC SARS Investigation 2003 NCID DVRD Infectious Disease Pathology Activity Respiratory and Enteric Viruses Branch Special Pathogens Branch NCID EOC Liaison Field Teams Response Teams CDC OD/OTPER/EOCOD/OC/ECS ChinaTaiwan Canada Hong Kong ThailandVietnam Clinical and Infection Control Quarantine LaboratoryEpidemiology Information Technology Communications International / WHOOccupational Health Team “B” Community Outreach Team “P” Environmental DomesticSingapore Special Investigations

U.S. SARS Cases No. of reports received by CDC: >17,400 No. specimens tested at CDC: >5,500 Maximal number of persons classified as suspect or probable: (80%) suspect 75 (20%) probable No. confirmed: 8 persons

U.S. Probable SARS Cases HI N = 75 CT 3 MA 2 MD 0 NJ

SARS Lab Specimens* Received at CDC Specimen Type No. Autopsy tissue 105 Stool 344 BAL/tracheal asp. 31Urine 224 NP SwabSerum acute 546 acute 1,535 convalescent 73 convalescent 530 unknown 225 unknown 1,420 Sputum 325 Other 80 Throat wash/swab 141 TOTAL 5,579 *Includes both domestic & international

84 personnel 1959 days ( = 7.8 work-years) totals: 92 deployed * 2Laos 151Cambodia 334Switzerland 604Thailand 886Hong Kong 98 Philippines 1039Canada 1375Singapore 22610Vietnam 49817China 69630Taiwan total days# staff deployed Country * 6 staff members deployed to 2 or more countries 5 CDC International Response: Personnel 4

CDC SARS Response: Reagents CDC shipments of SARS diagnostic materials to national and international academic centers, commercial companies, and governmental agencies RNAVirusAntigen Academic Commercial Governmental

CDC SARS Response: Communications News media calls handled: 10,166 News releases issued: 12 Live telebriefings/news conferences: 21 Health care responder conference calls: 30 Public Response Hotline: 34,229 phone calls answered 3,557 s answered 2,017 physician hotline calls answered 3 SARS satellite broadcasts: >1.9 million participants CDC SARS website: 17 million page views (3.8 million for April 20-26)

West Nile Virus

West Nile Virus Transmission Cycle Mosquito vector Incidental infections Bird reservoir hosts Incidental infections West Nile Virus West Nile Virus

Reported WNV Cases in Humans, United States, * Year# Cases# States# CountiesOnset Date Range AUG – 24 SEP JUL – 27 SEP JUL – 7 DEC 20024,15639**74019 MAY – 19 DEC 20039,61545** MAR – 3 DEC Canada: 2002 –

West Nile Virus Ecology in North America 49 mosquito species 162 native and captive avian species 18 other species (e.g., cats, dogs, squirrels, chipmunks, harbor seal, alligator, bats, reindeer)

~80% Asymptomatic ~20% “West Nile Fever” <1% CNS disease ~10% fatal (<0.1% of total infections) WNV Human Infection “Iceberg” 1 CNS disease case = ~150 total infections Very crude estimates

WNV Blood Screening, 2003 Transfusion-associated WNV transmission found in 2002 (23 documented episodes) Experimental screening tests (Nucleic acid amplification-NAT) introduced in summer million units screened 1,027 presumptive viremic donors identified 1% encephalitis; 15% WN Fever; 84% asymptomatic 6 transfusion-associated infections missed by assay

West Nile Virus Prevention & Control Environmental –Integrated pest management –Personal protective measures Screening –Blood donation screening Vaccines –Equine vaccine 2001 –Human chimeric vaccine – Phase I & II 2003 Therapeutics –Interferon –Immunoglobulin

International Outbreak Assistance A Global Approach to Diseases Surveillance Application of Proven Public Health Tools Applied Research on Diseases of Global Importance Global Initiatives for Disease Control Public Health Training and Capacity building

Public Health Training & Capacity Building

600 Members, 134 Member Institutions, 113 Countries WHO Global Salm-Surv Network

CDC Staff: Global Locations 163 CDC staff in long-term health assignments in 44 countries

IEIP Bangkok, Thailand 23 January 2002

Global Imperatives Improving global surveillance/outbreak response Building regional coordinating mechanisms Building linkages between human & animal health Enhancing lab capacity, security & safety