salk vaccine उदाहरण वाक्य

उदाहरण वाक्य

1. In the end, even Salk's doubters concede that they don't know exactly how the Salk vaccine will react in the long-term testing.
2. It was the death of Hall  a young, fit, international footballer  from Salk vaccine was available, takeup had been slow.
3. But the United States changed the protocol for polio vaccinations in 1997 to include the Salk vaccine, in order to prevent mutations.
4. Popescu was a twin; his brother died of polio because Romania was too poor and too backward to import the Salk vaccine.
5. Sabin's vaccine, made from a live version of the virus and delivered in drops rather than injections, supplanted the Salk vaccine in 1962.
6. Equally important, Prevots said, is that the oral vaccine creates strong immunity in the intestine, whereas the Salk vaccine has a weaker effect.
7. However, a year and a half after the Salk vaccine was introduced, a Sabin vaccine had still not yet been tested on humans.
8. Once types 1 and 3 cease to be endemic, the OPV will be phased out, and the Salk vaccine will be used exclusively.
9. In the 1950s, when the Salk vaccine erased the threat of polio, the pools were closed and became cracked and filled with algae.
10. But officials did not recall contaminated Salk vaccine _ more than a year's supply _ still in the hands of the nation's doctors.