The Dominican government is making available Pfizer booster shots for those who have received two doses of the Sinovac vaccine. The decision to apply the booster at least a month after the second dose of Sinovac is controversial. Opposing medics say there are insufficient clinical trials to substantiate the mixing of vaccines.
After an outbreak of Covid-19 Delta variant cases in Israel, a country with one of the highest percentages of population vaccinated with Pfizer in the world, medical researchers are sharing what they have learned.
The bottom line is that the Pfizer vaccine is not sufficiently effective to prevent people getting sick with the Delta variant. Yet, the researchers say that the vaccine has proven effective in considerably reducing the number of people getting seriously ill with the virus.
In the DR, the local authorities backed the application of the Pfizer vaccine after medics alerted they were treating too many seriously ill patients that had received the two doses of Sinovac.
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Jerusalem Post
6 July 2021