What is smallpox and how was it eradicated?
What is smallpox and how was it eradicated?
Smallpox has existed for at least 3000 years and was one of the world’s most feared diseases until it was eradicated by a collaborative global vaccination programme led by the World Health Organization. The last known natural case was in Somalia in 1977.
What was the smallpox eradication Programme?
On January 1, 1967, the World Health Organization launched the Intensified Smallpox Eradication Programme. At that time the plan was to rely entirely on mass vaccination of susceptible persons in endemic countries — the problem was defined as one of mass vaccination.
Who eradicated polio?
In 1988, the World Health Organization (WHO), together with Rotary International, UNICEF, and the U.S. Centers for Disease Control and Prevention (CDC) passed the Global Polio Eradication Initiative (GPEI), with the goal of eradicating polio by the year 2000.
What does smallpox eradication mean?
Smallpox Virus Thanks to the success of vaccination, the last natural outbreak of smallpox in the United States occurred in 1949. In 1980, the World Health Assembly declared smallpox eradicated (eliminated), and no cases of naturally occurring smallpox have happened since.
Which disease has been eradicated?
Two infectious diseases have successfully been eradicated: smallpox in humans and rinderpest in ruminants. There are four ongoing programs, targeting the human diseases poliomyelitis (polio), yaws, dracunculiasis (Guinea worm), and malaria.
Does the smallpox virus still exist?
Currently, there is no evidence of naturally occurring smallpox transmission anywhere in the world. Although a worldwide immunization program eradicated smallpox disease decades ago, small quantities of smallpox virus officially still exist in two research laboratories in Atlanta, Georgia, and in Russia.
How long did it take to eliminate polio?
Thanks to the polio vaccine, dedicated health care professionals, and parents who vaccinate their children on schedule, polio has been eliminated in this country for more than 30 years. This means that there is no year-round transmission of poliovirus in the United States.
What was the real cause of polio?
A virus called poliovirus causes polio. The virus enters the body through the mouth or nose, getting into the digestive and respiratory (breathing) systems. It multiplies in the throat and intestines. From there, it can enter the bloodstream.
Is chickenpox related to smallpox?
Chickenpox is the most important disease likely to be confused with smallpox. It is caused by a different virus. In smallpox, fever is present for 2 to 4 days before the rash begins, while with chickenpox, fever and rash develop at the same time.