Term
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Definition
16 hemaglutinin (H); 9 neuraminidase (N); moderate to severe illness
all age groups;humans and other animals |
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Term
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Definition
| milder epidemics (usually); humans only; primarily affects children; can put you in the hospital if susceptible |
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Term
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Definition
| rarely reported in humans, no epidemics or significant disease |
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Term
| All A subtypes are found in |
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Definition
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Term
| half subtypes are found in |
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Definition
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Term
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Definition
| more efficiently transmitted among humans human to human |
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Term
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Definition
| gradual mutation, may result in epidemic (widespread illness) |
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Term
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Definition
| more precipitous genetic recombo of 2 different strains, occurs at unpredictable intervals (pandemic may result) |
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Term
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Definition
| new influenza virus, animals are reservoir and infect a variety of hosts, efficiently transmitted between humans...need all three |
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Term
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Definition
| infection is maintained in population |
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Term
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Definition
| outbreak; new cases of disease exceeding what is expected (given population, specific time period) |
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Term
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Definition
| epidemic that is spreading through populations across large region/ worldwide |
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Term
| influenza season; northern hemisphere |
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Definition
| october to march (but can appear again in April-Sept) |
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Term
| influenza season; Southern hemisphere |
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Definition
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Term
| influenza season; tropics |
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Definition
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Term
| primary spread of influenza |
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Definition
| inhale droplets (sneezing, coughing, talking), up to 6 ft away |
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Term
| minor spread of influenza |
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Definition
| direct contact, indirect contact (possibly), stethoscope-hospital, computer keyboards, phones |
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Term
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Definition
| upper respiratory tract and eyes |
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Term
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Definition
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Term
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Definition
| occurs in respiratory secretions for 5-10 days |
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Term
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Definition
| up to 5-7 days after symptoms begin (longer in children) |
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Term
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Definition
| due to body's immune reaction to virus |
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Term
| replication in respiratory epithelium occurs |
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Definition
| with subsequent destruction of cells |
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Term
| time from infection to symptoms |
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Definition
| 2 days (range 1-4 days); abrupt onset |
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Term
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Definition
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Term
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Definition
| primary viral, secondary bacterial (staph and strep) |
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Term
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Definition
| might also have sinusitis and otitus media concurrently |
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Term
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Definition
| reye syndrome, encephalitis, seizures |
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Term
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Definition
| myocarditis and pericarditis |
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Term
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Definition
| children (<5 yrs esp. <2 yrs), pregnant, elderly (>65 yrs), chronic medical conditions |
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