1. Communicable Diseases
Disease Unit

2. The Threat of Infection:
Population crowding
Easy travel also make us more vulnerable 
Antibiotic Resistant

3. Conjunctivitis-Pink Eye-Bacterial
The cause of pink eye is commonly a bacterial or viral infection, an allergic reaction
Redness in one or both eyes
Itchiness in one or both eyes
A gritty feeling in one or both eyes
A discharge in one or both eyes that forms a crust during the night
Tearing

5. Tuberculosis (TB)-Bacterial
Tuberculosis (TB) is a potentially serious infectious disease that primarily affects your lungs. The bacteria that cause tuberculosis are spread from person to person through tiny droplets released into the air via coughs and sneezes.
Cough
Unexplained weight loss
Fatigue
Fever
Night sweats
Chills
Loss of appetite
Tuberculosis was once rare in developed countries, but the number of TB cases began increasing in Part of the increase was caused by the emergence of HIV, the virus that causes AIDS. HIV weakens a person's immune system so it can't fight the TB germs.Many strains of tuberculosis can resist the effects of the drugs most commonly used to treat the disease. People who have active tuberculosis must take several different types of medications together for many months to eradicate the infection and prevent development of antibiotic resistance.

6. Influenza (The Flu): 5% to 20% of the U.S. population gets the flu
more than 200,000 people are hospitalized
about 36,000 people die
Some people, such as older people, young children, pregnant women and people with certain health conditions (such as asthma, diabetes, or heart disease), are at increased risk for serious complications from seasonal flu illness.
Spread person to person through coughing or sneezing of people. Sometimes people may become infected by touching something with flu viruses on it and then touching their mouth or nose. Most healthy adults may be able to infect others beginning 1 day before symptoms develop and up to 5-7 days after becoming sick. That means that you may be able to pass on the flu to someone else before you know you are sick, as well as while you are sick.

7. Influenza: Symptoms of seasonal flu include: fever (often high)
headache
extreme tiredness
dry cough
sore throat
runny or stuffy nose
muscle aches
Stomach symptoms, such as nausea, vomiting, and diarrhea, also can occur but are more common in children than adults.

8. H1N1 Flu:
2009 H1N1 (sometimes called “swine flu”) is a new influenza virus causing illness in people. This new virus was first detected in people in the United States in April 2009.
WHO Declared H1N1 a pandemic in 2009

9. H1N1 Symptoms: The symptoms of 2009 H1N1 flu virus in people include:
Fever
Cough
Sore throat
Runny or stuffy nose
Body aches
Headache
Chills
Fatigue
Vomiting
Diarrhea

10. Measles-Viral
Also called rubeola, measles can be serious and even fatal for small children. While death rates have been falling worldwide as more children receive the measles vaccine, the disease still kills several hundred thousand people a year, most under the age of 5.
Fever
Dry cough
Runny nose
Inflamed eyes (conjunctivitis)
Sensitivity to light
A skin rash made up of large, flat blotches that often flow into one another

12. Chicken Pox-Viral
When chickenpox does occur, it's highly contagious among people who aren't immune. Most people think of chickenpox as a mild disease — and, for most, it is.
A red, itchy rash, initially resembling insect bites, on your face, scalp, chest and back
Small, liquid-filled blisters that break open and crust over
Fever
Abdominal pain or loss of appetite
Mild headache
General feeling of unease and discomfort (malaise) or irritability
A dry cough
Headache
The chickenpox rash goes through these three phases:Raised pink or red bumps (papules), which break out in different spots over several daysFluid-filled blisters (vesicles), forming from the raised bumps over about one day before breaking and leakingCrusts and scabs, which cover the broken blisters and take several more days to heal

14. Athlete’s Foot-Fungi
Athlete's foot, is the most common type of fungal infection. It's closely related to other fungal infections such as ringworm and jock itch. Although contagious, athlete's foot often can be treated with over-the-counter antifungal medications.
Itching, stinging and burning between your toes
“ ”soles of your feet
Itchy blisters
Cracking and peeling skin, especially between your toes and on the soles of your feet
Excessive dryness of the skin on the bottoms or sides of the feet
Toenails that are thick, crumbly, ragged, discolored or pulling away from the nail bed

16. Jock Itch-Fungi
Jock itch is a fungal infection that affects the skin of your genitals, inner thighs and buttocks.
Itching and redness in your groin, including your genitals, inner thighs and buttocks
Possible itching in your anal area
Burning sensation in affected areas
Flaking, peeling or cracking skin in your groin

17. Malaria-Protozoa
Malaria produces recurrent attacks of chills and fever. Caused by a parasite that's transmitted by mosquitoes, malaria kills about 1 million people each year worldwide. Common in tropics.
Moderate to severe shaking chills
High fever
Profuse sweating as body temperature falls

19. Pinworms-Parasite
Pinworm infection is the most common type of intestinal worm infection in the United States. Pinworms are thin and white, measuring about 1/4 inch to 1/2 inch (5 to 13 millimeters) in length.
Itching of the anal or vaginal area
Insomnia, irritability and restlessness
Intermittent abdominal pain and nausea
While the infected person sleeps, female pinworms lay thousands of eggs in the folds of skin surrounding the anus. While most people infected with pinworms have no symptoms, some people experience anal itching and restless sleep.Pinworm infection occurs most frequently in school-age children, and the microscopic eggs are easily spread from child to child — especially if children scratch their bottoms or neglect to wash their hands after using the bathroom or before eating.

21. Tapeworms-Parasite
Tapeworm infection is caused by ingesting food or water contaminated with tapeworm eggs or larvae. If you ingest certain tapeworm eggs, they can migrate outside your intestines and form cysts in body tissues and organ
Nausea
Weakness Loss of appetite
Abdominal pain
Diarrhea
Weight loss and inadequate absorption of nutrients from food