You dont want to have a depressed autoimmune system and catch the covid.
So yes Flu and Pneumonia shots cause your body to increase its antibody production against those types of viruses.
Wife works with an 70yrs old virologist who gets several flu shots over season to keep his antibody level elevated.
"Maybe we're all happy."
"Go to the sporting goods store. From the files, obtain form 4473. These will contain descriptions of weapons and lists of private ownership."
| 
