Mumbai / Pune: In the largest study carried out so far in India to understand why people got Covid-19 despite taking one or two vaccine shots, scientists from Pune-based National Virology Institute (NIV) found a simple answer: B.1.617 .2, That better known as Delta variants.
Delta variants were found in 87% of the 677 throats and nasal swabs of covid-19 patients from 17 states and trade union areas.
While this 592 patients had taken two doses, 85 only took a dose before the SARS2 virus was infected.
The genome analysis showed the presence of Delta variants in most samples, but there were other variants such as Alpha, Kappa, Delta AY.1 (known as Delta-Plus variants in samples from Madhya Pradesh and Rajasthan) and Delta AY .2.
This study, led by Director of Dr.
Priya Abraham and Senior Scientist Dr.
Pragya Yadav, also found that less than 10% of 677 patients needed hospitalization, offending the effectiveness of the vaccine in preventing severe infections.
Three patients who had taken the photo died, but their age and existing medical conditions were not mentioned.
More than 20% of these patients have comorbidity such as diabetes, hypertension or chronic lungs, heart or kidneys.
“The most important point of our study is that vaccination offers protection of more than 99% against death even in the presence of Delta Strain,” said Dr.
Yadav.