The NEJM published 2 papers last week on hospitalised patients with H1N1 flu. The findings help remind us who are most vulnerable to swine ful.
One group of researchers found that between June and August 2009, 722 patients with H1N1 virus infection were admitted to an ICU during the winter in Australia or New Zealand.
Of the 722 patients, 92.7% were under 65, 9.1% were pregnant women, 28.6% of the adult patients had a body-mass index (BMI) >35, 32.7 % with asthma and chronic pulmonary disease. The highest age-specific incidence of ICU admission was among infants under the age of 1 whereas the highest number of ICU admissions was among patients 25 to 49 years of age.
Source : "Critical Care Services and 2009 H1N1 Influenza in Australia and New Zealand". Published at www.nejm.org October 8, 2009 (10.1056/NEJMoa0908481)
Another group of researchers studied 272 patients who were hospitalized with 2009 H1N1 influenza in the US from April 2009 to mid-June 2009.
Of the 272 patients studied, 7% died, the median age of patients who died was 26. 45% of the patients were children under 18, and 5% were 65 or older, 73% of the patients had at least one underlying medical condition, asthma was the most common condition in both children and adults.
Source: "Hospitalized Patients with 2009 H1N1 Influenza in the United States, April–June 2009", Published at www.nejm.org October 8, 2009 (10.1056/NEJMoa0906695),
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