ICMR suggests containment in 36 districts after many with respiratory infection test COVID-19 positive

Ghughuti Bulletin


About 40 percent of COVID-19 cases with severe acute respiratory infection did not have any history of contact with a positive patient or international travel, and they were reported from 36 districts of 15 states, an ICMR study found on Thursday while recommending these places for priority containment measures.

A total of 104 of the 5,911 patients with severe acute respiratory infections (SARI) tested positive for COVID-19, out of which 40 cases did not report any history of contact with a known case or international travel, according to the study.

Also, males accounted for higher number of COVID-19 cases and also patients aged above 50 years of age.

According to the study, which has been published in the Indian Journal of Medical Research, a total of (104) 1.8 percent of the 5,911 SARI patients tested were positive for COVID-19.

These cases were reported from 52 districts in 20 states and union territories.

“In all, 39.2 percent COVID-19 cases did not report any history of contact with a known case or international travel,” the study said while two per cent reported contact with a confirmed case and one per cent reported recent history of international travel.

Data on exposure history was not available for 59 percent cases.

The ICMR in its study highlighted that COVID-19 containment activities need to be targeted in districts reporting positive cases among SARI patients and stated that intensifying sentinel surveillance for COVID-19 among SARI patients may be an efficient tool to effectively use resources towards containment and mitigation efforts, it said.

Sentinel surveillance among SARI patients can help identify the spread and extent of transmission of COVID-19, the Indian Council of Medical Research said.

The SARI surveillance was initiated in the early phase of the COVID-19 outbreak in India.

In India, the initial COVID-19 testing strategy included people who had international travel history with symptoms, symptomatic contacts of laboratory-confirmed COVID-19 patients and symptomatic healthcare workers managing respiratory distress/SARI.

In addition, to track the progression of the epidemic in the early phase, stored samples of SARI patients hospitalised since February 15 were also tested for COVID-19 under the Virus Research and Diagnostic Laboratory Network (VRDLN).

As part of the study, SARI patients admitted at 41 sentinel sites from February 15 onwards were tested positive for COVID-19 by real-time reverse transcription-polymerase chain reaction.

During the study, SARI patients were detected from eight districts in Maharashtra, six in West Bengal and five each in Tamil Nadu and Delhi.

The chances of getting infected among SARI patients increased from 0 percent before March 14, to 2.6 percent by April 2.

In 15 Indian states, more than 1 percent of SARI patients were COVID-19 positive.

About a third of COVID-19 positive SARI cases did not have any history of contact with laboratory-confirmed case or international travel, and such cases were reported from 36 districts in 15 states. These districts need to be prioritised to target COVID-19 containment activities, the study stated.

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