Surveillance of the first 205 confirmed hospitalised cases of pandemic H1N1 influenza in Ireland, 28 April - 3 October 2009.
From 28 April 2009 to 3 October 2009, 205 cases of confirmed pandemic H1N1 influenza were hospitalised in Ireland. Detailed case-based epidemiological information was gathered on all hospitalised cases. Age-specific hospitalisation rates were highest in the age group of 15 to 19 year-olds and lowest in those aged 65 years and over. Nineteen hospitalised cases (9%) were admitted to intensive care units (ICU) where the median length of stay was 24 days. Four hospitalised cases (2%) died. Fifty-one percent of hospitalised cases and 42% of ICU cases were not in a recognised risk group. Asthma was the most common risk factor among cases; however, people with haemoglobinopathies and immunosuppression were the most over-represented groups.
Cullen
G
G
Health Protection Surveillance Centre, Dublin, Ireland.
Martin
J
J
O'Donnell
J
J
Boland
M
M
Canny
M
M
Keane
E
E
McNamara
A
A
O'Hora
A
A
Fitzgerald
M
M
Jackson
S
S
Igoe
D
D
O'Flanagan
D
D
D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D002675:Child, Preschool; D005260:Female; D006760:Hospitalization; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D053118:Influenza A Virus, H1N1 Subtype / Q000302:isolation & purification*; D007251:Influenza, Human / Q000175:diagnosis / Q000453:epidemiology*; D007362:Intensive Care Units; D007494:Ireland / Q000453:epidemiology; D007902:Length of Stay; D008297:Male; D008875:Middle Aged; D011159:Population Surveillance; D055815:Young Adult