In January 2012, a physician in a Buenos Aires hospital telephoned the Ministry of Health (MOH) to report three possible cases of botulism. The patients, all men in their 30s, presented with drooping eyelids, double vision, difficulty swallowing, and respiratory problems. One patient had onset of symptoms on February 2, the other two on February 5. All three men worked in a local meat factory. What type of study is this? Case-control study Case series Ecologic study Cross-sectional study
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In January 2012, a physician in a Buenos Aires hospital telephoned the Ministry of Health (MOH) to report three possible cases of botulism. The patients, all men in their 30s, presented with drooping eyelids, double vision, difficulty swallowing, and respiratory problems. One patient had onset of symptoms on February 2, the other two on February 5. All three men worked in a local meat factory. What type of study is this?
Case-control study
Case series
Ecologic study
Cross-sectional study
If the incidence rate of a very serious disease is 25 cases/100,000 person-months and the prevalence of this disease in the population is 75 cases/100,000 persons, what is the average survival time of individuals who contract this disease?
1 year
3 years
3 months
4 months
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