The COVID-19 vaccines currently approved for use require two doses for the inoculation to be effective against the virus. But scientists are also working at finding a single-shot vaccine that will reduce the wait time for the benefits to show. Moreover till now there has been some debate on whether previously infected people are eligible for the vaccine whether it will have any adverse effects on them or if it is even required. Many studies are being conducted on these topics. So it comes as good news that a new study found that people who were previously infected with the
