Covid vaccines provided protection in more than 95 per cent of recipients, with post-vaccination infection occurring in only 4.28 per cent of those who received the jabs, according to a study on over 31,600 vaccinated healthcare workers by a leading hospital chain.
Apollo Hospitals today released the results of a study of healthcare workers across India conducted over four months beginning January 16 this year to May 30 and covering 31,621 healthcare workers who were either completely vaccinated or had received only a single shot of the either of the two-dose vaccines Covishield and Covaxin.
Commenting on the study, Dr Prathap C Reddy, Founder Chairman, Apollo Hospitals Group said, “This study reiterates the fact that our mainstay against COVID-19 is mass vaccination. Vaccines are not only safe, but they also help prevent severe manifestations of COVID-19 and will help save lives. The results of this large study across India make for a compelling case for citizens above the age of 18 to come forth and get vaccinated in order for us as a country to tide over the COVID-19 crisis.”
“With greater availability of the vaccines in the coming weeks, the number of vaccines administered each day should increase. We should aim to vaccinate 5 million Indians per day consistently. The main conclusions from the study are that post-vaccination infections are usually minor and vaccination helps to prevent severe infection, ICU admissions, and death,” Dr Reddy added.
Speaking on the details of the study, Dr K Hariprasad, President-Hospitals Division, Apollo Hospitals Group said, “This is one of the largest cohorts of vaccinated healthcare workers analysed in the country so far. The 31,621 healthcare workers covered under the study were from 43 units of the Apollo Hospitals group across 24 cities in the country. The healthcare workers covered various categories including doctors, nursing, paramedical as well as support and administrative staff. We thank them for participating in this study, which has helped highlight the role of vaccines in our fight against COVID-19.”
“While the study emphasises the fact that COVID-19 vaccines are effective, it is important to continue with Covid safe behavior even when fully vaccinated such as wearing a mask, sanitising hands, maintaining appropriate social distance, and avoiding crowds.” added Dr Hariprasad.
Dr Anupam Sibal, Group Medical Director and Senior Pediatric Gastroenterologist, Apollo Hospitals Group said, “The results showed that Covid vaccines provided protection in more than 95 per cent of the recipients and that post-vaccination infection occurred in only 4.28 per cent of the vaccinated healthcare workers.
“The finding also showed only 90 cases or 0.28 per cent of cases required hospitalisation, with only three cases 0.009 per cent requiring ICU admission. The most important finding of the study was that there were no deaths in case of Covid infection after vaccination”.
“Covishield was administered to 28,918 healthcare workers (91.45 per cent), while 2703 (8.55 per cent) received Covaxin. 25,907 or 81.9 per cent healthcare workers were fully vaccinated, having received both doses of the vaccine, while 5,714 or 18.1 per cent had received only the first dose. Out of the fully vaccinated workers, 1061 or 4.09 per cent reported post-vaccination infections, while 294 or 5.14 per cent of the partly vaccinated workers tested positive,” Dr Sibal added.
Dr Raju Vaishya, Senior Consultant Orthopaedics and Joint Replacement Surgeon and one of the key authors of the study, said, “Of the 90 cases who required hospitalisation, 48 were males and 42 were females with the majority i.e, 83 cases being below 50 years of age. Of the 3 ICU admissions, two were males and one was female, between the ages of 25 to 39 years, with two fully vaccinated and 1 partially vaccinated. The incidence of post-vaccination infection in those who had been administered Covishield was 4.32 per cent and in those who had received Covaxin was 3.85 per cent. The findings of the study are under consideration for publication in a peer-reviewed medical journal.”