Bloomberg: Herd Immunity May Be Developing in Mumbai’s Poorest Areas

Bloomberg: Herd Immunity May Be Developing in Mumbai’s Poorest Areas. “Around six in ten people living in some of India’s biggest slums have antibodies for the novel coronavirus indicating they’ve recovered from infection, in what could be one of the highest population immunity levels known worldwide. The findings, from a July serological survey of 6,936 people across three suburbs in India’s financial center of Mumbai, may explain why a steep drop in infections is being seen among the closely-packed population, despite new cases accelerating overall in the hard-hit country.”

Bloomberg: Covid Antibodies Fade Rapidly, Raising Risk of Lost Immunity

Bloomberg: Covid Antibodies Fade Rapidly, Raising Risk of Lost Immunity. “Recovering from Covid-19 may not offer much lasting protection from future infections for those with only mild cases, according to a report that suggests caution regarding so-called herd immunity as well as the durability of vaccines. The correspondence in the New England Journal of Medicine outlined research on antibodies taken from the blood of 34 patients who had recovered after suffering mainly mild symptoms that didn’t require intensive care. Just two needed supplemental oxygen and received an HIV medication, and none were on a ventilator or getting Gilead Sciences Inc.’s remdesivir.”

The Atlantic: How Long Does COVID-19 Immunity Last?

The Atlantic: How Long Does COVID-19 Immunity Last?. “Terrified, I read the study that launched a thousand headlines—and did not come away much less terrified. Researchers at King’s College London had tested more than 90 people with COVID-19 repeatedly from March to June. Several weeks after infection, their blood was swimming with antibodies, which are virus-fighting proteins. But two months later, many of these antibodies had disappeared…. I called several scientists to talk me through the study and ease my apocalyptic anxiety. Their response: Please calm down—but don’t expect us to make you feel entirely relaxed.”

The Guardian: Immunity to Covid-19 could be lost in months, UK study suggests

The Guardian: Immunity to Covid-19 could be lost in months, UK study suggests. “People who have recovered from Covid-19 may lose their immunity to the disease within months, according to research suggesting the virus could reinfect people year after year, like common colds. In the first longitudinal study of its kind, scientists analysed the immune response of more than 90 patients and healthcare workers at Guy’s and St Thomas’ NHS foundation trust and found levels of antibodies that can destroy the virus peaked about three weeks after the onset of symptoms then swiftly declined.”

World Health Organization: “Immunity passports” in the context of COVID-19

World Health Organization: “Immunity passports” in the context of COVID-19. “WHO has published guidance on adjusting public health and social measures for the next phase of the COVID-19 response.1 Some governments have suggested that the detection of antibodies to the SARS-CoV-2, the virus that causes COVID-19, could serve as the basis for an ‘immunity passport’ or ‘risk-free certificate’ that would enable individuals to travel or to return to work assuming that they are protected against re-infection. There is currently no evidence that people who have recovered from COVID-19 and have antibodies are protected from a second infection.”

DICE: Immune cell atlas goes live (EurekAlert)

EurekAlert: DICE: Immune cell atlas goes live . “Compare any two people’s DNA and you will find millions of points where their genetic codes differ. Now, scientists at La Jolla Institute for Immunology (LJI) are sharing a trove of data that will be critical for deciphering how this natural genetic variation shapes the immune system’s ability to protect our health.”