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‘70% of Covid-19 patients don’t transmit virus,’ reveals study conducted in AP, TN

A modern research carried out by US-based Centre for Disease, Dynamics and Economic Policy (CDDEP) in Andhra Pradesh and Tamil Nadu has revealed that not all people contaminated with Covid-19 transmit the virus, stating kids as lively transmitters.

The research, titled ‘Epidemiology and transmission dynamics of Covid-19 in two Indian states’, was revealed within the September 30 version of ‘Science’ journal.

Quoting the findings, an official within the Andhra Pradesh authorities stated a crew of investigators from the CDDEP, Andhra Pradesh and Tamil Nadu governments and University of California at Berkeley studied illness transmission patterns in 575,071 people uncovered to 84,965 confirmed instances of Covid-19 in these two states.

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“The study, based on data collected by tens of thousands of contact tracers in the states of Andhra Pradesh and Tamil Nadu, is the largest and most comprehensive analysis of Covid-19 epidemiology till date,” the official claimed.

According to the research, potential follow-up testing of uncovered contacts had revealed that 70 % of contaminated people didn’t infect any of their contacts, whereas eight % of contaminated people accounted for 60 % of noticed new infections.

The research discovered a excessive prevalence of an infection amongst kids who have been contacts of instances round their very own age. “Risk of transmission from an index case to a close contact ranges from 2.6 percent in the community to 9.0 percent in the household. Same-age contacts are associated with the greatest infection risk,” it stated.

However, mortality is greater within the age group of 40-69 years in these two states. It is 0.05 % among the many individuals within the age group of 5-17 years and 16.6 % in individuals of above 85 years. “Men were 62 percent more likely to die than women. Similarly, 63 percent of those who died had at least one co-morbidity, while 36 percent had two or more co-morbidities. Nearly 45 percent of the deceased were diabetic,” the research revealed.

The research discovered that each Andhra Pradesh and Tamil Nadu have efficient main healthcare supply fashions. These two states have the most important healthcare workforces and public well being expenditures per capita. They initiated rigorous illness surveillance and speak to tracing early in response to the pandemic, it stated.

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“They have followed procedures including syndromic surveillance and testing for all individuals seeking care for severe acute respiratory illness or influenza-like illness at healthcare facilities, delineation of 5-km “containment zones” surrounding instances for day by day house-to-house surveillance to determine people with signs,” it noticed.

The research additionally famous that there’s a day by day follow-up of all contacts of laboratory-confirmed or suspected Covid-19 instances, with the purpose of testing these people 5-14 days after their contact with a main case, no matter signs, to determine onward transmission.

According to the director of the CDDEP, Dr Ramanan Laxminarayan, this research was made doable by the numerous contact-tracing effort in Andhra Pradesh and Tamil Nadu which concerned tens of hundreds of healthcare staff.

“The results on disease transmission and mortality have the potential to inform policy to fight Covid-19. The study also speaks to the capacity of research emerging from India to help inform the global response to Covid-19,” he stated.