WebSmallpox is a viral infection which usually enters the body through the nose or throat. From here the virus travels to the lungs, where it multiplies and spreads to the lymphatic system. Within a ... WebThis is a list of the largest known epidemics and pandemics caused by an infectious disease.Widespread non-communicable diseases such as cardiovascular disease and cancer are not included. An epidemic is the rapid spread of disease to a large number of people in a given population within a short period of time; in meningococcal infections, an …
Vector Biology - National Institute of Allergy and Infectious Diseases
WebNov 10, 2024 · Smallpox is an acute contagious disease caused by the variola virus, a member of the orthopoxvirus family. It was one of the most devastating diseases known to humanity and caused millions of deaths before it was eradicated. It is believed to have existed for at least 3000 years. The smallpox vaccine, created by Edward Jenner in 1796, … WebNov 26, 2013 · Khan said the CDC's $1 billion program supporting disease identification and emergency operations now runs on $600 million, and with 45,700 fewer public health workers in the field, functioning as ... time warner cable sumter
Influenza pandemic of 1918–19 Cause, Origin, & Spread
WebMar 17, 2024 · As of March 16, the coronavirus disease, or COVID-19, has been confirmed in 167,515 individuals and caused 6,606 deaths around the globe, according to the World Health Organization. Most of these ... WebOne of the most devastating pandemics was the Black Death (1346 to 1361) that is believed to have been another outbreak of bubonic plague caused by the bacterium Yersinia pestis. … WebJan 31, 2024 · The disease mainly affects children and sometimes leaves survivors with permanent disabilities. Polio epidemics occurred sporadically in the United States until … time warner cable technical service