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CORONAVIRUS CASUALTIES (Sept 23):- GLOBAL:- Total Cases: 3,18,29,935; Total Deaths: 976,356 Recovered: 2,34,31,243 BELGIUM:- Total Cases: 1,05,226; Total Deaths: 9,955 BRAZIL:- Total Cases: 45,95,335; Total deaths: 1,38,159 CANADA:- Total Cases: 1,46,663; Total Deaths: 9,234 CHINA:- Total Cases: 85,307 ; Total Deaths: 4,635 FRANCE:- Total Cases: 4,68,069; Total Deaths: 31,416 GERMANY:- Total Cases: 2,77,420; Total Deaths: 9,494 INDIA:- Total Cases: 56,50,540; Total Deaths: 90,077 INDONESIA:- Total Cases: 2,57,388; Total Deaths: 9,977 IRAN:- Total Cases: 4,32,798; Total Deaths: 24,840 ITALY:- Total Cases: 3,00,897; Total Deaths: 35,738 JAPAN:- Total Cases: 79,438 ; Total Deaths: 1,508 MEXICO:- Total Cases: 7,05,263; Total Deaths: 74,348 NETHERLANDS:- Total Cases: 98,240; Total Deaths: 6,291 PHILIPPINES:- Total Cases: 2,94,591; Total Deaths: 5,091 RUSSIA:- Total Cases: 11,22,241; Total Deaths: 19,799 S KOREA:- Total Cases: 23,216; Total Deaths:388 SPAIN:-Total Cases: 6,82,267; Total Deaths: 30,904 SWEDEN:- Total Cases: 89,436 Total Deaths: 5,870 SWITZERLAND:-Total Cases: 51,101; Total Deaths: 2,060 UAE:- Total Cases: 87,530; Total Deaths: 406 UK:- Total Cases: 4,03,551; Total Deaths: 41,825; US:- Total Cases: 70,98,291; Total Deaths: 2,05,491 - India Travel Times.Com   [Estd: 1998]       * * *    Travel, More Travel, Travel Means A Million Things     * * *    

ICMR sero survey says 64 lakh people were corona infected by May

Surprisingly, the worst-affected among the samples were in the age group of 18 to 45 years. The sero-prevalence survey was conducted in 700 villages and wards of 70 districts in 21 States. Four hundred adults were selected per district. But how dependable is sero test.

NEW DELHI, Sept 12: The sero survey on the prevalence of coronavirus in the country conducted by the Indian Council of Medical Research (ICMR) has calculated that 64 lakh people were possibly infected by the pathogen by the month of May. This is around 12 times the figures for the corresponding period put out by the Union Health Ministry.

The sero-prevalence survey was conducted in 700 villages and wards of 70 districts in 21 States. It was conducted from May 11 to June 4. Four hundred adults were selected per district. They belonged to 10 clusters. One adult was tested per household.

The IgG antibodies were found to be appearing after first week of symptoms showing up and by the end of the second week most cases were IgG positive, the study found in the random survey, according to the report in the Indian Journal of Medical Research (IJMR).

The analysis of the ICMR sero survey reports has calculated the national prevalence of the pathogen at 0.73%. The worst-affected among the samples were in the age group of 18 to 45 years and 43.3% had developed antibodies against coronavirus.

What is sero test (serological test): This is a simple blood test to detect any antibodies in the blood created in response to a viral contact in the past. Antibodies provide protection against current or future repeat infection. But these antibodies can also disappear after a month or two in the case of covid. Therefore, the test has no validity and there has been a controversy over why are we doing this massive operation.

What is rapid diagnostic test: A rapid diagnostic test is a quick test easy to do and it gives the result immediately, say about half an hour. No additional equipment is required. These are useful for for preliminary or emergency screening and are also useful for poor countries. They are usually cheap.

Rapid diagnostic test for covid (Rapid Antigen Test): In the case of covid, the rapid antigen test shows the presence of viral proteins (antigens) of the virus in the sample. The sample is taken from the respiratory tract. These rapid tests are not dependable when the result is negative. Unlike the Polymerase Chain Reaction (PCR) test. Because the antigen must be present in sufficient concentrations in the sample, then only it will bind to specific antibodies fixed to a paper strip. The test is based on agglutination, immuno-dot, immuno-chromatographic and/or immuno-filtration techniques.

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