Program.Salk’s announcement led to Food and Drug Administration FDA approval for clinical production was restarted.Subsequent years saw the development of another polio vaccine by Albert Sabin. His vaccine uses a weakened version of the live virus and is given by mouth instead of an injection. Because the Salk vaccine was already approved in the U.S. it was difficult to create interest in clinical trials for a new vaccine. Sabin therefore conducted his clinical trials in Africa the Soviet Union and Czechoslovakia where he tested the vaccine on over 100000 children.
The World Health Organization WHO then verified the clinical trial results. This was important Belize WhatsApp Number because of the political tensions and international distrust during this time due to the Cold War. After it was verified the Sabin vaccine was quickly found to be a great tool for mass vaccinations because it is given as oral droplets. Today millions of people have been safely vaccinated against polio. Vaccineinduced polio is extremely rare and both polio vaccines are considered very safe. In the United States only the inactivated polio vaccine.
A the original Salk vaccine is approved for use by the FDA. Today these vaccines carry zero risk of causing vaccineinduced polio. In other parts of the world the oral polio vaccine the Sabin vaccine is administered. These use an extremely weakened version of the virus and in very rare cases can cause actual polio infection. Though there are good reasons to use the oral polio vaccine the sort of immunity they confer not only protects individuals but also halts spread news of
發表於 2024-3-7 17:40:37
