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communicable disease PDF

Terms in this set (45)

AIDS/HIV: incubation period
HIV Infection: 14 days. AIDS (Stage 3 HIV Infection): 7 to 10 years (when HIV infection untreated)
AIDS/HIV: mode of transmission
Person-to-person by (1) sexual contact, (2) exposure to blood, (3) mother to infant during pregnancy or at time of birth, or via breast feeding
AIDS/HIV: periods of communicability
Persons with HIV should be considered infectious for life. Risk of transmission may be higher in first months after infection.
chickenpox-varicella: incubation period
10-21 days, average 14-16 days.
chickenpox-varicella: mode of transmission
Person-to-person by droplet or airborne spread of respiratory secretions; direct contact with drainage from blisters or indirectly through articles contaminated by secretions from blisters.
chickenpox-varicella: periods of communicability
As long as 5, but usually 1-2 days before onset of rash until all blisters have crusted.
chlamydia: incubation period
1-3 weeks; often asymptomatic, especially in females.
chlamydia: mode of transmission
Contact with infected person through sexual activity; neonatal infections by contact with birth canal.
chlamydia: periods of communicability
Duration of infection. Reinfection is common if partners are not treated in a timely manner. Without treatment, infection may persist indefinitely, leading to infections of the upper reproductive tract and other serious, long-term complications in both females and males.
gonorrhea: incubation period
2-5 days, sometimes longer; often asymptomatic especially in females.
gonorrhea: mode of transmission
Contact with infected person through sexual activity; neonatal infections by contact with birth canal.
gonorrhea: period of communicability
Duration of infection. Reinfection is common if partners are not treated in a timely manner. Without treatment, infection may persist indefinitely, leading to infections of the upper reproductive tract and other serious, long-term complications in both females and males
Hep A: incubation period
15-50 days, average 28-30 days.
Hep A: mode of transmission
Person-to-person spread by fecal-oral route; ingestion of contaminated food or water, or sharing of drug paraphernalia.
Hep A: period of communicability
Approximately 2 weeks before and 1 week after onset of jaundice.
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