Infectious Disease

Infection is the invasion of an organism’s body tissues by disease-causing agents, their multiplication, and the reaction of host tissues to these organisms and the toxins they produce. Infectious disease, also known as transmissible disease or communicable disease, is illness resulting from an infection.

Bronchitis: Should I Take Antibiotics?

Guides through decision to take antibiotics for acute bronchitis. Explains when antibiotics are helpful. Covers risks of antibiotics. Includes interactive tool to help you make your decision.

Chickenpox Vaccine: What You Need to Know

Varicella (also called chickenpox) is a very contagious viral disease. It is caused by the varicella zoster virus. Chickenpox is usually mild, but it can be serious in infants under 12 months of age, adolescents, adults, pregnant women, and people with weakened immune systems. Chickenpox causes an itchy rash that…

Cholera Vaccine: What You Need to Know

Cholera is a disease that can cause severe diarrhea and vomiting. If it isn’t treated quickly, it can lead to dehydration and even death. About 100,000-130,000 people are thought to die from cholera each year, almost all of them in countries where the disease is common. Cholera is caused by bacteria, and spread through…

DTaP (Diphtheria, Tetanus, Pertussis) Vaccine: What You Need to Know

DTaP vaccine can help protect your child from diphtheria, tetanus, and pertussis. DIPHTHERIA (D) can cause breathing problems, paralysis, and heart failure. Before vaccines, diphtheria killed tens of thousands of children every year in the United States. TETANUS (T) causes painful tightening of the muscles…

Flu Vaccines: Should I Get a Flu Vaccine?

Guides you through the decision to get a flu vaccine. Provides info on the flu shot. Explains who should and should not get a flu vaccine. Covers benefits and risks. Includes interactive tool to help you make your decision.