Food & Energy Security Research & Product Centre, Japan
* Corresponding author
Aligarh Muslim University, India
Jamia Millia Islamia, India
Amity University, India
Citizens Speciality Hospital and American Oncology Institute, India
Genomia Diagnostics Research Pvt.Ltd., India
Aligarh Muslim University, India
Medanta Hospital, India
All India Institute of Medical Sciences, (AIIMS), India
Ragas Dental College and Hospital, India
Aligarh Muslim University, India

Article Main Content

The vaccine breakthrough infections (BTI) among healthcare workers (HCWs) in various hospital networks in India have been studied. Apollo Hospital, PGIMER, Medanta, Civil Hospital, Park Hospital, Max, Fortis, Narayana, and Maulana Azad hospitals were included in the study. During the Delta variant surge, the BTI were reported in the range of 6-25%. By comparing the BTI rates during the severe Delta variant wave and less severe Original (Wuhan, Alpha, Beta, and Gamma) strain wave, it was worked out that the BTI were more among HCWs who were exposed to high viral load. In the initial days of the pandemic in the first wave when the total active cases were less, the rates of BTI were in the range of 1.6- 2.6%. When the viral load increased in the second deadly Delta wave, the BTI rose to 6-25%. The real-time data collected has established that the vaccination gave a protective shield against the novel coronavirus infection. Though the BTI were reported but the severity of the infection remained mild with a low hospitalisation rate and oxygen support requirement. No BTI infected HCWs succumbed to the SARS-CoV-2 infections.

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