Kerala Chief Minister Pinarayi Vijayan received the first dose of the COVID-19 vaccine on Wednesday.
The nation-wide vaccination drive was rolled out on January 16 with healthcare workers being inoculated against the virus.
A vaccine is a technique to introduce a pathogen into the body in harmless form so that if that particular virus or bacteria attacks, the victim can escape without serious consequences.
Vaccination will be provided free of charge at the government health facilities and will be on a payment basis in the private health facilities.
While guidelines from the Union government are yet to be received, the centres expect that the vaccination will increase by two to four times than the current pace.
According to the researchers, the strong response to one dose of the vaccine among those previously infected regardless of the duration between infection and vaccination is good news.
Union Health Minister Harsh vardhan emphasised the importance of social distance and appropriate healthcare behaviour despite the falling number of corona cases in the country.
An experts' panel said the two-dose AstraZeneca vaccine efficacy tended to be higher when the interval between doses was within the four to 12 weeks range.
There was some variation in symptoms depending on age, but chills were associated with Covid-19 across all age groups.
According to the researchers, the method is easily adaptable to analyze potential mutations of the virus, ensuring the best possible vaccines are quickly identified.