Study debunks concept of 'herd immunity' as a way of tackling COVID-19

Only 5 per cent from a total of 61,000 patients that participated in research in Spain developed antibodies to be able to fight COVID-19 respiratory disease debunking concept of “herd immunity”, according to a population-based seroepidemiological survey in a study published in Lancet Journal. Experts found that Spain was "very far" from reaching 60 per cent rate of infection within community for herd immunity to work, with challenge of one-third of its population asymptomatic after contracting virus.  

As per research conducted in study ENE-COVID by  Spanish Ministry of Health and Institute of Health Carlos III, in collaboration with health services of Spanish regions, SARS-CoV-2 antibodies were t developed in all of  35,883 households infected with coronavirus. "At present, herd immunity is difficult to achieve without accepting collateral dam of many deaths in susceptible population and overburdening of health systems," researchers wrote in study, casting doubts on prospect of ‘herd immunity’ to tackle coronavirus.

Despite high impact of Covid-19 in Spain, prevalence estimates remain low and are clearly insufficient to provide herd immunity, study authors wrote in medical journal. In this situation, social distancing measures and efforts to identify and isolate new cases and ir contacts are imperative for future epidemic control, y ded.

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70 to 90% population needs resistance

ditionally, researchers observed that for herd immunity to develop, over 70 per cent to 90 per cent of total population h to build resistance to coronavirus, which implied most people in community h to be infected. With coronavirus symptoms for each patient different, re was a huge risk factor involved. Moreover, study found that COVID-19 antibodies were less than 3 per cent in coastal regions, large stretch of areas in Spain.

 study, refore, vocated  need for maintaining public health measures to combat coronavirus. In furr research conducted in US and China to detect possibility of "herd immunity" in  coronavirus patients, a study revealed that “most of inhabitants appear to have remained unexposed to coronavirus, even in spots with prevalent virus circulation" refore, development of herd immunity from COVID-19 seemed far-fetched, as per a Lancet report.

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(Ims Credit: Lancet Journal)