A U.S. emergency department nurse tested positive for New Crown eight days after receiving the Pfizer New Crown vaccine. U.S. experts say it takes 10 to 14 days for the vaccine to have a protective effect on humans.
ABC’s KGTV San Diego reported Dec. 30 that a 45-year-old emergency department nurse named Matthew (Matthew W.) received the Pfizer vaccine on Dec. 18, when the only side effect was arm pain.
Six days later, on Christmas Eve, he began experiencing symptoms, including chills, muscle pain and fatigue. The day after Christmas Day, Matthew was tested for New Coronavirus (SARS-CoV-2) and tested positive.
In response, Christian Ramers, an infectious disease specialist at the San Diego Family health Center, said it was not surprising that the patient did not show immediate protection after the vaccination.
Ramers said, “We know from clinical trials of the vaccine that it takes about 10 to 14 days for the vaccine to begin to have a protective effect on humans.”
Even if the vaccine begins to produce protection, he said, it is not full protection, “The first dose of the vaccine can be about 50 percent effective, and you need a second dose of the vaccine to be 95 percent effective.”
Another possibility is that Matthew contracted New Crown before he was vaccinated, as the virus has an incubation period of up to 14 days.
Ramos concluded by cautioning that wearing a mask, washing hands regularly and other protective measures remain important after vaccination.
Recent Comments