Here’s why some people test positive after getting a Covid-19 vaccine
They could test positive for some reasons.
For Pfizer, the first dose after 14 days was about 52% effective in preventing the disease, said Salata, who was the principal investigator for the Pfizer vaccine at her hospital.
Vaccination prevents most but not all diseases
You can still test positive after being vaccinated because the vaccine is not 100% effective.
The two US authorized vaccines are highly effective, but they do not provide total protection.
Vaccination prevents disease, but infection, it is not clear
Vaccination prevents disease, but it is still unclear whether, or how much, the vaccine prevents all infections.
“But focusing on the efficacy numbers does not portray the whole picture, as you may still end up with Kovid, but by all indications it appears that those cases are still far less serious than the unknowing ones. And that’s really important. ”
Vaccine manufacturers are still studying whether vaccines only protect people from getting really sick or if they completely prevent infection.
If you are asymptomatic then you will test positive for Kovid-19. It would also mean that you can spread the disease even if you are vaccinated. That is why we will still need to wear masks to get vaccinated. A person can be an asymptomatic carrier and have a virus in their nasal passages, so while they are breathing or speaking or sneezing, they could still send novel coronaviruses to others.
Vaccines do not work retroactively
The study found that 22 out of 4,081 vaccinated health care workers tested positive for Kovid-19 after receiving their first dose.
Dr. of Sheba Medical Center in Israel. One of the study authors of Iyal Leshem said that it is clear that some workers who tested positive were infected with Kovid before getting their first dose.
There is concern that some variants that are spreading in the US may be less susceptible to vaccine protection.
Preliminary lab data suggests vaccines should provide protection, and public health leaders want as many people vaccinated as soon as possible to limit their chances of muting the virus.
The Kovid-19 vaccine manufacturers said they are testing to see if the vaccines work against variants and they are also working on boosters that will add additional protection against variants.
“It’s possible a year from now, that I’ll get a flu shot in one hand and a Kovid vaccine update booster in the other,” Schaffner said. “We have to adapt ourselves to what this virus is doing. And we have the ability to keep the virus, and even beyond.”