If one person has taken the first dose of the COVID-19 vaccine, is there a possibility to be affected by COVID-19 before taking the second dose?
Dear Nasid Imtiaz Masuk,
Not only after 1st dose ,but even after the 2nd dose , it is found to be affected by COVID-19. ( Source : from some news , I can't remember ) .
Thanks
N Das
Yes! Please see the link below.
https://www.thehindu.com/news/national/telangana/2-doctors-get-covid-19-infection-20-days-after-1st-dose-of-vaccine/article33831076.ece
People can still catch the SARS-CoV-2 more than two weeks after the second dose.
https://www.nbcchicago.com/news/local/it-hit-me-hard-northbrook-mom-gets-covid-after-second-vaccine-dose/2465900/
You can be infected with covid-19 even after taking the second dose. Vaccine provides protection against covid-19 to some extent but it does not ensure complete protection . The intensity of protection provided by covid-19 vaccine mainly depends of individual's immune system.
Pakistan Prime Minister gets COVID-19 after first dose of Chines COVID-19 vaccine
https://www.firstpost.com/world/chinas-sinopharm-vaccine-comes-under-scrutiny-in-pakistani-after-pm-tests-positive-two-days-after-taking-first-dose-9449441.html
This news answers your question, because after one dose of COVID-19 vaccine the protective antibodies do not peak until about 3-4 weeks. Therefore, infection can occur during this period as happened after 2 days of Pakistani premier testing positive for COVID-19.
Even after 2 injections of the COVID-19 vaccine (as detailed in my next answer), vaccines will not prevent SARS-CoV-2 infection in 100% people who got the vaccine.
Chances of getting COVID-19 despite completion of COVID-19 vaccine
It does not need a rocket-science to understand that all COVID-19 vaccinations available are not 100% effective. The overall risk of infection despite having COVID-19 vaccines is different with different types of vaccines depending on their efficacy after two doses (or one dose for Jhonson-Jhonson) of the vaccine used:
Formula for calculating the risk of COVID-19 infect after completion of vaccination: 100 minus efficacy of COVID-19 vaccine
1. Pfizer and Moderna vaccines (95% preventive): 5% risk of COVID-19 infection
2. Spuntik (Russian) vaccine (92% effective): 8% risk of COVID-19 infection
3. Sinopharm (Chinese) vaccine (79% effective): 21% risk of COVID-19 infection 4. AstraZeneca vaccine (80% prevention): 20% risk of COVID-19 infection
5. Jhonson-Jhonson vaccine (72% prevention): 28% risk of COVID-19 infection
Yes, because individuals have not enough protection against covid-19 after the first dose of the vaccine (low level of antibodies).
Yes, it is possible to be infected with SARS-CoV2 after taking the first dose of the vaccine. It is also possible to be infected with SARS-CoV2 after taking the second dose of the vaccine...
Yes , it is possible to be infected with SARS-CoV-2 after taking the second dose of the vaccine. But SARS-CoV-2 infection after the second dose of vaccination is usually with very mild symptoms or asymptomatic.
Yes its common to get COVID19 even after 2nd dose. However the effects of the disease would be less.
It is quite possible to get inflected even after vaccination. But, vaccination would lower down the damage caused by virus.
yes, It is possible to be affected in COVID-19 after taking first dose of vaccine.
Yes many people have developed COVID-19 after having the first and even the second doses of the vaccine.
I even began to wonder if people some people giving the vaccines had asymptomatic infections with COVID-19...
One dose of two COVID-19 vaccines have efficacy to up to >80% in the elderly.
For symptomatic disease 14 days after one dose of vaccine, estimated vaccine efficacy 14 days after one dose of vaccine was 71·4 % (95% CI 46·5–90·6) for BNT162b2 and 80·4% (36∙4–94∙5) for ChAdOx1 nCoV-19 (1).
Single-dose SARS-CoV-2 vaccination efficacy in the elderly
https://www.thelancet.com/journals/laninf/article/PIIS1473-3099(21)00354-6/fulltext
YES it is possible. Millions in UK, USA and every where have been infected even following one or doses of the corona vaccine. It seems that the vaccine can only protect against new infection by about 30%. All depends on the person individual immunity and circumstances.
Definitely yes. Only one vaccine is not a total solution. You have to get both vaccines.
The antibody titer after the first dose of COVID-19 vaccine is low. Therefore, the booster dose is necessary.
Oh yes of course. After the first shot, after the second shot and (I am afraid) after the third shot...
You can always get COVID-19 BUT your immune system has been trained, you should have some Antibodies and some specially trained T- and B-Immunological Blood (memory) cells. Therefore there should be an immune anwer and the course of the disease should be more shallow than without vaccination. That is the reason we vaccinate...
It is like with the flu vaccine: you may get it but it should be a milder course of infection...
NB: the antibody immune reaction is just one out of many ways the immune system reacts and works on the SARS-CoV-2 virus (and all other pathogens)...