Why do some persons become infected and exhibit symptoms of this disease, whereas others never show any symptoms of the disease despite being seropositive?
If a group of persons became voluntarily isolated and returned to the community some days latter, new waves occurred.
No additional persons became ill.
Persons became infected through the consumption of contaminated foods in commercial catering and home settings.
When the older persons became tired the researchers stopped the conversations and returned another day.
In 2 Houston households, persons became sick after eating eggs purchased in farmers' markets.
Ten persons became symptomatic, and 9 of them were hospitalized (5 ).
While using videos from a single camera, in some sequences due to restricted view, persons become partly or totally invisible.
Persons who are symptomatic die or become immune with probability pM or 1 – pM, respectively, and asymptomatic persons become immune.
Persons become infected by inhaling fungal spores (2 ), and the infection is usually asymptomatic.
