Search results
Results from the WOW.Com Content Network
Human infectious diseases may be characterized by their case fatality rate (CFR), the proportion of people diagnosed with a disease who die from it (cf. mortality rate).It should not be confused with the infection fatality rate (IFR), the estimated proportion of people infected by a disease-causing agent, including asymptomatic and undiagnosed infections, who die from the disease.
Deaths from the varicella zoster virus, one of eight herpesviruses known to infect humans. It causes chickenpox (varicella), a disease most commonly affecting children, teens, and young adults, and shingles (herpes zoster) in adults; shingles is rare in children.
Before routine immunization the number of cases occurring each year was similar to the number of people born. [9] Since immunization the number of infections in the United States has decreased nearly 90%. [9] In 2015 chickenpox resulted in 6,400 deaths globally – down from 8,900 in 1990. [6] [15] Death occurs in about 1 per 60,000 cases. [9]
Cases of tularemia, also known as “rabbit fever," are on the rise in the U.S., according to a new report from the CDC. The report identifies symptoms and the groups most at risk.
The first severe case of bird flu in the U.S. is showing signs of mutation, stoking fears that the virus could become more transmissible among humans, the U.S. Centers for Disease Control and ...
In 2006, the CDC's Advisory Committee on Immunization Practices (ACIP) recommended a second dose of vaccine before school entry to ensure the maintenance of high levels of varicella immunity. [24] In 2006, the FDA approved Zostavax for the prevention of shingles. Zostavax is a more concentrated formulation of the Varivax vaccine, designed to ...
According to the CDC, it causes 2,500 outbreaks in the U.S. alone, accounting for 58% of foodborne illnesses in the nation. "Norovirus is highly infectious, and outbreaks have been linked to foods ...
For a given epidemic or pandemic, the average of its estimated death toll range is used for ranking. If the death toll averages of two or more epidemics or pandemics are equal, then the smaller the range, the higher the rank. For the historical records of major changes in the world population, see world population. [3]