2 ms·
The assumption should also be existing cases of infection that are not yet symptomatic, or are totally asymptomatic. Borders are leaky too, but when the disease
by pbhjpbhj 5y ago
The assumption should also be existing cases of infection that are not yet symptomatic, or are totally asymptomatic. Borders are leaky too, but when the disease was found it was already well distributed, and with a long incubation period.