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Once a primary infection has occurred person-to-person transmission may lead to secondary infections.
If HBV infection occurred, person-time denominators were reduced by half-time between the positive serologic test result and the last seronegative donation [ 13].
Transmission during this outbreak most likely occurred person-to-person directly through fecal oral contact or by indirect exposure through contaminated objects or surfaces because 7 (78%) of the 9 ill persons were from the same classroom (attack rate 32% [7 of 22 students and teachers]).
Transmission of shigellosis in this township likely occurred via person-to-person contact.
However, most human genetic variation occurs from person to person within any ethnic group.
Transmission occurs from person to person by the bite of the female Anopheles mosquito.
However, strain-specific virus transmission may occur from person to person (7 – 9 ).
"The warrants will prove a MAC occurred," this person said.
Outcomes were assumed to have been equivalent whether the consultation had occurred in person or via the HTP.
In addition, asymptomatic carriers are the main source of pneumococcal transmission, with person-to-person spread occurring among persons in close contact with each other (2).
In an analysis of PCP cases diagnosed during 1999 2001, 44% of cases occurred among persons not receiving care, 10% occurred among persons in care who met criteria for prophylaxis but were not prescribed prophylaxis, and 41% occurred among persons prescribed prophylaxis but who were either not adherent to treatment or who developed PCP despite appropriate use [3].
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