Siegfried X
Well-known member
Characteristics of reported cases of new influenza A (H1N1) virus infections in humans
Considerations for assessing the severity of an influenza pandemic
Overall clinical features: Primarily influenza-like illness (ILI) in affected people. Gastrointestinal symptoms have been reported in some countries, including in 38% of outpatients in the United States. Some countries have reported cases of mild or sub-clinical illness without fever.
Predisposing risk factors to severe illness: A moderate proportion of severe cases were considered to be at increased risk. 64% of 30 hospitalized cases in California (USA)and 46% of 45 fatal cases in Mexico had underlying medical conditions. Predisposing factors were absent in about half of cases in some reports. Severe disease has been noted in some pregnant women. Of 30 hospitalized cases in California (USA), 17% were pregnant.
Hospitalization: No hospitalizations for illness in many affected countries. Approximately 2?5% of confirmed cases in Canada and the United
States and 6% in Mexico have been hospitalized. Few cases hospitalized for illness are adults aged >60 years
Considerations for assessing the severity of an influenza pandemic
Overall clinical features: Primarily influenza-like illness (ILI) in affected people. Gastrointestinal symptoms have been reported in some countries, including in 38% of outpatients in the United States. Some countries have reported cases of mild or sub-clinical illness without fever.
Predisposing risk factors to severe illness: A moderate proportion of severe cases were considered to be at increased risk. 64% of 30 hospitalized cases in California (USA)and 46% of 45 fatal cases in Mexico had underlying medical conditions. Predisposing factors were absent in about half of cases in some reports. Severe disease has been noted in some pregnant women. Of 30 hospitalized cases in California (USA), 17% were pregnant.
Hospitalization: No hospitalizations for illness in many affected countries. Approximately 2?5% of confirmed cases in Canada and the United
States and 6% in Mexico have been hospitalized. Few cases hospitalized for illness are adults aged >60 years