Another study showed that approximately 80% of the people in the sample had full or partial (long lasting) immunity to the chinese virus from a previous illness - in other words, actually getting sick from a cold or the flu and getting over it.
According to that study, only the remaining 20% of the people were susceptible to the chinese virus in the first place.
Another study showed that approximately 80% of the people in the sample had full or partial (long lasting) immunity to the chinese virus from a previous illness - in other words, actually getting sick from a cold or the flu and getting over it.
According to that study, only the remaining 20% of the people were susceptible to the chinese virus in the first place.