Tag Archives: immunity

Mild COVID-19 induces lasting antibody protection

Months after recovering from mild cases of COVID-19, people still have immune cells in their body pumping out antibodies against the virus that causes COVID-19, according to a study from researchers at Washington University School of Medicine in St. Louis. Such cells could persist for a lifetime, churning out antibodies all the while.

The findings, published May 24 in the journal Nature, suggest that mild cases of COVID-19 leave those infected with lasting antibody protection and that repeated bouts of illness are likely to be uncommon.

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“Last fall, there were reports that antibodies wane quickly after infection with the virus that causes COVID-19, and mainstream media interpreted that to mean that immunity was not long-lived,” said senior author Ali Ellebedy, PhD, an associate professor of pathology & immunology, of medicine and of molecular microbiology. “But that’s a misinterpretation of the data. It’s normal for antibody levels to go down after acute infection, but they don’t go down to zero; they plateau. Here, we found antibody-producing cells in people 11 months after first symptoms. These cells will live and produce antibodies for the rest of people’s lives. That’s strong evidence for long-lasting immunity.”

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COVID-19 science: Understanding the basics of ‘herd immunity’ – AHA

Dr. Eduardo Sanchez is the American Heart Association’s chief medical officer for prevention and a former state health commissioner of Texas. He has dealt with major public health crises – including the SARS outbreak. In this occasional series, he’ll break down various topics related to the coronavirus pandemic.

Recently I heard a medical “expert” on the news incorrectly define the term “herd immunity.” It’s a new phrase for many people, but we’re hearing about it more and more, so it’s important to understand exactly what it is.

people cheering

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First, let’s discuss how immunity works for individuals. A person can become immune (or resistant) after exposure to a disease-causing agent, such as the coronavirus causing COVID-19 in this case. The process of becoming immune includes the production of antibodies specific to the virus for future protection. Continue reading

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Filed under coronavirus, coronavirus risk, COVID-19, herd immunity, immunity

Don’t Throw Away That Dark Banana – Infographic

This little fact was mind-blowing to me. Hopefully, there is an element of surprise in it for you, too.

YADA+CHEF+RIPE+BANANAS

Regular readers know that I have a banana every day in my morning smoothie. I have posted on this edible yellow fruit (botanically, it’s a berry) several times. To read further, check out:

7 Amazing Facts About Bananas – Infographic
More Good Reasons to eat Bananas – Infographic
6 Super Facts About Bananas – Infographics
6-reasons-you-should-eat-bananas-infographic

Higher Perspective says, “So the best time to eat a banana? When it’s fully ripe. But it’s worth noting, if you suffer Type 2 diabetes, you may want to eat a ripe banana with nut butter. The fat in the butter will slow down sugar absorption in your blood stream so it doesn’t hit you all at once.”

Tony

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