JERUSALEM - Pfizer's COVID-19 vaccine greatly reduces virus transmission, two Israeli studies have found, shedding light on one of the biggest questions of the global effort to quash the pandemic.
More research is needed to draw a definitive conclusion, but the studies are among the first to suggest a vaccine may stop the spread of the novel coronavirus and not just prevent people getting ill. The researchers said further study was needed on asymptomatic transmission among people fully vaccinated because they are less likely to be tested for COVID-19.
Canadian researchers in a letter published this week suggested that the second Pfizer dose be delayed given the high level of protection from the first shot to increase the number of people getting vaccinated. Another caveat is that the cohort studied at the hospital were "mostly young and healthy," Sheba epidemiologist Gili Regev-Yochay said.
Both studies' findings compared with overall efficacy of around 95% in a two-dose regimen 21 days apart. The Health Ministry/Pfizer researchers found the vaccine to be effective against the British coronavirus variant that makes up about 80% of Israel's confirmed cases.
ISRAELI VACCINE STUDY n yan mga NOYPI Tapos PINAS gustong i-push DONATED SINOVAC at SINOPHARM Vaccines ang ituturok s ORDINARYONG NOYPI. Kya dameng TAKOT magpaVAKUNAH dahil s ganito. OK lng s may PIRA n kyang bumuli ng PFIZER atbpng mas effective n VAKUNAH. Bka nga vaccinated n
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