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From escape mutations to wild strains: Here’s everything you need to know about Covid variants

This transmission electron microscope image shows SARS-CoV-2—also known as 2019-nCoV, the virus that causes COVID-19. isolated from a patient in the U.S., emerging from the surface of cells cultured in the lab. Source: NIAID-RML Even as the number of global Covid-19 infections drops across the world, leading U.S. health officials are warning of a coming… Read More »

Data from routine clinical care shows people HIV have an increased risk of dementia and that it’s diagnosed at a younger age

The risk of dementia in older age is increased by 58% for people living with HIV compared to their HIV-negative peers, according to US research published in the online edition of AIDS. The average age at dementia diagnosis was much younger for people with HIV: 67 years compared to 78 years for people without HIV.… Read More »

Universal mask wearing could save almost 130,000 lives from coronavirus, epidemiologist says

Epidemiologist Dr. Ali Mokdad is advising people across the U.S. “to be very careful” and “to change our behaviors” as the nation heads toward winter, the worst season for viral transmission. Mokdad’s research estimates America could see more than 500,000 total deaths from Covid-19 by the end of February, more than double the current toll,… Read More »

Advice on Virus Transmission Vanishes From C.D.C. Website

Just days after publishing significant new guidance on airborne transmission of the coronavirus, the Centers for Disease Control and Prevention on Monday withdrew the advice, saying only that it had been “posted in error” on the agency’s website. The rapid reversal prompted consternation among scientists and again called into question the credibility of the world’s… Read More »