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A study was conducted by the healthcare workers (HCW) in India to understand the effectiveness of vaccines in India.
About the effectiveness of vaccines:
- The study involved 515 healthcare workers from 13 states and 22 cities, 305 male of whom were male.
- These healthcare workers have been administered either of the two vaccines, Covishield and Covaxin. Further, they are chosen with or without a past history of Covid-19 infection.
Read Also :-India approves COVID-19 vaccines Covishield
Key Findings regarding the effectiveness of vaccines:
- Higher Seropositivity: Among the 515 healthcare workers, 95% showed seropositivity (higher antibodies) after two doses of both vaccines.
- Seropositivity: It refers to the presence of specific antibodies in an individual.
- Higher Antibodies: Covishield vaccine has produced more antibodies than the Covaxin doses.
- Antibody: It is a protein produced by the body’s immune system when it detects harmful substances called antigens.
- Breakthrough infections: A total of 27 breakthrough infections (4.9%) were recorded among the respondents. However, there were relatively fewer instances of ‘breakthrough infections’ after taking Covaxin than Covishield.
- Breakthrough infection: It is a case of illness in which a vaccinated individual becomes sick from the same disease for which the vaccine was administered.
- Side Effects: There were mild to moderate adverse events associated with both the vaccines, but there were no serious side effects observed during the study.
Source: The Hindu
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