Pfizer’s vaccine is 94 percent effective in preventing asymptomatic transmission of the virus that causes COVID-19, according to data from Israel. The COVID-19 vaccine, co-produced with BioNTech, was also at least 97 percent effective in preventing symptomatic disease, severe-critical disease, and death, the companies and the Israel Ministry of Health said. The figures stem from an analysis of surveillance data collected between January 17 and March 6, when the vaccine was the only one available in the country. Outcomes were measured from two weeks after the second dose. Authorities recommend getting two doses of the vaccine several weeks apart. “Incidence rates in the fully vaccinated population have massively dropped compared to the unvaccinated population, showing a marked decline in hospitalized cases due to COVID-19,” Yeheskel Levy, Israel’s health director, said in a statement. “This clearly demonstrates the power of the COVID-19 vaccine to fight this virus and encourages us to …