What :

• There have been several cases of Covid-19 vaccinated people, even those who have received both doses, testing positive for the virus.
• Such cases are referred to as “breakthrough” infections, indicating that the virus has been able to break through the defences created by the vaccine.
• Such cases have led to some doubts being expressed about the effectiveness of the vaccine, and contributed to the already prevailing vaccine hesitancy.
• However, vaccines protect not against the infection, but against moderate or severe disease and hospitalisation.
• It typically takes about two weeks for the body to build immunity after being vaccinated.
• So, the chances of a person falling sick during this period are as high — or as low — as the chances for any person who has not been vaccinated.

What is in news : Amidst reports of rising numbers of “breakthrough infections”, India SARS-CoV-2 Genome Consortium (INSACOG) said these numbers are on expected lines but did not officially quantify the extent of such infections.