Mackaracka: the REAL one
2 years
"Exposure, not immunity," per Hotez.
CDC estimates 43% of country had virus as of late Jan.:
60% of children up to age 18, half of people 18 to 49, 37% of those 50 to 64, and 23% of those 65 and older.
Vulnerable will be most impacted by mask change.