Dear Reader:

Worldometer (July 30): over 17 million cases and over 673 thousand deaths worldwide.

Over 4.6 million cases and over 154 thousand deaths in the US; almost 67 thousand new cases and almost 1.5 thousand deaths were reported yesterday in the US.

Yesterday (July 29), over 10 thousand new cases were reported in California, almost 10 thousand cases were reported in Florida, and over 9 thousand new cases were reported in Texas. In each one of these three states, yesterday was a record high number of daily deaths during all of the pandemic: 195 new deaths in California, 216 new deaths in Florida, and 313 new deaths in Texas.

There are over 2.5 million cases and over 90 thousand deaths in Brazil, a record high of over 70 thousand new cases and a record high of over 1.5 thousand new deaths were reported yesterday.

There are over 1.6 million cases and over 35 thousand deaths in India, a record high of over 52 thousand cases were reported yesterday, and 779 deaths were reported yesterday.

msn. com/ en- us/ health/ medical/ why some people who haven’t had covid-19 might already have some immunity (July 30): “The study, published in the journal Nature on Wednesday, found that among a sample of 68 healthy adults in Germany who had not been exposed to the coronavirus, 35% had T cells in their blood that were reactive to the virus. T cells are part of the immune system and help protect the body from infection. T cells reactivity suggests that the immune system might have had some previous experience fighting a similar infection and may use that memory to help fight a new infection.

“So how could their immune system have reactive T cells if they never had Covid-19? They were ‘probably acquired in previous infections with endemic’ coronaviruses, the researchers- from various institutions in Germany and the United Kingdom- wrote in the new study. Using this T cell memory from another-yet-similar infection to respond to a new infection is called ‘cross- reactivity’…

“So far during the coronavirus pandemic, much focus has been on Covid-19 antibodies and the role they play in building immunity against the disease. But infectious disease expert Dr. William Schaffner.. said that T cells can not be overlooked. ‘Here’s a study that suggests actually there may be some cross-reactivity.. with the normal conventional coronaviruses that cause common colds in humans..’…

“‘SARS-Cov-2 is the seventh human coronavirus that has been discovered, and four of the human coronaviruses are what we call community-acquired coronaviruses, and together those four are responsible for 25% of our common colds.. almost every person in the world has had some encounter with a coronavirus, and since they are all part of the same family, there is some cross reactive immunity that develops”.

anita

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