1. The survey, conducted in the first week of July by the BMC, NITI Aayog, and the Tata Institute of Fundamental Research, found 57% of the samples from slums and 16% from non-slums had Covid-19 antibodies.
![](https://www.shortpedia.com/blog/wp-content/uploads/2020/08/2-1.jpg)
2. Around six in ten people living in India’s biggest slums have antibodies for the novel coronavirus in what could be one of the highest population immunity levels known worldwide.
![](https://www.shortpedia.com/blog/wp-content/uploads/2020/08/3-1.jpg)
3. More than 6,936 samples were collected from the slum and non-slum populations of the three wards of Dahisar, Chembur, and Matunga representing the city and its eastern and western suburbs that together have a population of almost 18 lakhs.
![](https://www.shortpedia.com/blog/wp-content/uploads/2020/08/4-1.jpg)
4. Since 42% of the Mumbai residents live in slums, the results mean a large number of the people have already been infected by the virus and may have developed immunity against it.
![](https://www.shortpedia.com/blog/wp-content/uploads/2020/08/5-1.jpg)
5. While some studies showed antibody counts dropping after a few months, creating the possibility of re-infection, some experts also started the possibility of other immune cells to continue providing immunity even after antibodies fade.
![](https://www.shortpedia.com/blog/wp-content/uploads/2020/08/6-1.jpg)
6. About 57% of surveyed people in Dahisar, Chembur, and Matunga had antibodies in their blood, compared to 21.2% found in an April study in New York City, and 14% reported in Stockholm in May.
![](https://www.shortpedia.com/blog/wp-content/uploads/2020/08/7-1.jpg)