After completing the entire vaccine schedule, i.e. after the second dose of COVISHIELD and COVAXIN, an adequate immune response takes 2-3 weeks.
COVID-19 is being tested once more. If you've recovered from your symptoms after testing positive for COVID-19, you will test positive for three months or longer without risking spreading the virus to others. As a result, you can only be screened if you show new symptoms of COVID-19.
Since clinical trials for the COVID-19 vaccine only began in the summer of 2020, it's unclear if these vaccines would have long-term side effects. Vaccines, on the other hand, seldom have long-term side effects.