A nurse in California reportedly tested positive for COVID-19, a week after he received the Pfizer Inc’s vaccine.
The ABC news reported that 45-year-old Matthew W who works as a nurse in two local hospitals started to feel fatigued and muscle aches only six days after taking the medicine. Later he tested positive for coronavirus.
A disease specialist Christian Ramers was reported calling this an expected scenario. He said that it takes 10-15 days for the vaccine to develop immunity. “That first dose we think gives you somewhere around 50%, and you need that second dose to get up to 95%,” he added.
Ramers also speculated that Matthew could have been infected before he got vaccinated and he might have been in the incubation period. He talked about many such incidents where health care workers got infected after receiving the vaccine. According to him such case illustrate the fact that vaccine results are not immediate. “Even after you start receiving some protection, it won't be full protection,” he further said.
The US Food and Drug Administration (FDA) had approved the Pfizer-BioNTech COVID-19 vaccine for emergency use on December 11, 2020. The vaccine was found to be 95 per cent effective in preventing infections. So far, Britain Canada, Saudi Arabia, Mexico and Bahrain have approved the use of Pfizer vaccine.
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