TB vaccine is 100 years old--and it's not 100%; and flu season is coming

 Although we have the BCG vaccine for TB, it isn't 100% and other public health measures are necessary to control the disease. Killing nearly 1.5 million people in 2019, it stood as the leading global cause of death from an infectious pathogen, according to the World Health Organization. Do not expect the Covid vaccine to be perfect or 100%.

 Bile and Potatoes, 1921 | The Scientist Magazine® (the-scientist.com)

Although masks don't provide much protection against Covid19, they really help during flu season. I plan to mask up for that. And the flu will probably be baaaack with a vengeance this fall and winter.
"In the United States alone, influenza viruses cause hundreds of thousands of hospitalizations and tens of thousands of fatalities each year. During the pandemic, however, a drastic change occurred: there was a precipitous drop in infections with influenza and other respiratory viruses—and in some parts of the world, some of these pathogens are nowhere to be found.

. . . Mask wearing, social distancing, and other restrictions implemented to stave off SARS-CoV-2 are thought to be the primary culprits in the decline in other respiratory pathogens in circulation. As such measures are lifted, though, scientists are expecting the missing viruses to return—and are pondering what will happen when that occurs. " The Pandemic Crushed the Flu--What Happens When It Returns? | The Scientist Magazine® (the-scientist.com)