Widespread use of RAT, in some circumstances as much as 90% of all exams, has raised fears that numerous optimistic circumstances could possibly be missed. As per the ICMR protocol, each optimistic report from RAT could be handled as confirmed, however samples that take a look at unfavourable are to be retested utilizing RTPCR.
It is unclear what number of states are rigorously following the retesting protocol.
The motive for a lot of states preferring the RAT is that it not solely provides outcomes inside 30 minutes, it additionally could be performed exterior a laboratory setting. However, RTPCR exams outcomes, that are imagined to be accessible in eight hours however have typically ended up taking days due to backlogs, are thought of to be the gold customary.
India is at present doing greater than 9 lakh exams per day, down from the 11 lakh plus exams which had been being performed until a couple of week again. The day by day positivity charge or the proportion of samples testing optimistic has additionally been coming down steadily because the final week of October. It is at present simply 4.2% in comparison with 9.1% on October 22.
However, even some states that haven’t seen positivity charges fall have decreased exams. A excessive positivity charge signifies the necessity for extra testing as extra exams may decide up extra circumstances. Among massive states, Rajasthan and Delhi have the best positivity charge of roughly 13%. Delhi has pushed up testing to succeed in between 2,300 and a pair of,700 exams per million inhabitants, however about 70% of exams are RAT.
Rajasthan has the bottom exams per million within the nation, simply 211. The state was doing over 25,000 to 28,000 exams per day in October, when its positivity charge was 5.5%-6.5%. The quantity has now fallen to round 16,500 exams per day although the variety of circumstances too goes up. Rajasthan is utilizing solely RTPCR exams, which could clarify the issue in quickly increasing testing.
In Haryana too, the positivity charge has been going up and has touched 11.5%, the best within the final two months, although the variety of day by day circumstances dipped over the previous couple of days after steadily rising from the final week of October. In Haryana, 70% of exams are RTPCR.
Kerala is one other state with a really excessive positivity charge of 10%, although that is decrease than the height in the midst of October when it had touched 16%. With the variety of exams being performed nearly the identical, the variety of circumstances have been declining because the finish of October.
After Delhi, Kerala and Karnataka have the best testing charges within the nation of about 1,500 exams per million, however over 60% of the exams being utilized in Kerala are the speedy antigen exams. In Karnataka, RAT constitutes solely round 32% of the entire variety of exams.
In Maharashtra, although the positivity charge of 8.5% is excessive relative to most states, it’s a lot decrease than in October when it had reached over 25%. From doing nearly one lakh exams day by day, the variety of exams per day is now round 40,000. Daily circumstances too have come down from 22,000 plus across the center of October to lower than 4,000 because the starting of this week. Questions have been raised about the opportunity of this discount being as a consequence of elevated use of RAT. had reported that in 14 of the state’s 36 districts, 50% of the testing was via RAT. In 4 of them, 72-83% of the exams had been RAT.
States like Bihar, Gujarat and Telangana too are relying nearly solely on RAT for his or her covid testing. While official knowledge was not accessible in all circumstances, authorities sources in every of those states confirmed that round 90% of exams had been RAT.