@CBCNews Cm'on CBC, the immunity debt hypothesis doesn't cut it as an explanation of increased whooping cough (or anything else) cases 5 years later! It's more likely that rampant COVID is suppressing people's immune systems.
@CBCNews Cm'on CBC, the immunity debt hypothesis doesn't cut it as an explanation of increased whooping cough (or anything else) cases 5 years later! It's more likely that rampant COVID is suppressing people's immune systems.