[Excess respiratory diseases in children and elderly people in a community of Santiago with high particulate air pollution].
BACKGROUND
The relationship between air pollution and health damage has been sufficiently documented. In station "R" of the air quality monitoring system, located in a community of Metropolitan Santiago (Cerro Navia), the Chilean standard of 150 microg/m3, averaged in 24 hours, for particles with a diameter of 10 micrometers or less (PM10), has been exceeded more days than in the rest of the city stations.


OBJECTIVE
To investigate if the population living near that station has a higher proportion of lower respiratory infections than the Metropolitan Region (MR) as a whole.


METHODS
An outpatient clinic located near station "R" (Centro Albertz), was implemented as a sentinel center according to UNICEF methodology, used since 1992 by the Acute Respiratory Infections National Program. Daily information was collected between May and December 2004. Monitoring data included total number of consults by children less than 15 years old for lower respiratory tract infections, pneumonia, obstructive bronchitis syndrome in children and by adults over 64 years old for lower airway disease, chronic obstructive pulmonary disease (COPD), and pneumonia. Results were compared with those of the rest of MR.


RESULTS
Compared with the MR, children from the sentinel clinic had a significantly higher proportion of consults for obstructive bronchial syndrome (20.1% and 26.4% respectively, in p<0.01) and pneumonia (1.3 and 2.7% respectively, p<0.01). In the elderly, the average consults for lower airway disease were 17% in the sentinel clinic and 12.2% in MR (p<0.04).


CONCLUSIONS
Children and elderly subjects at the sentinel clinic had a significantly higher proportion of respiratory infections (pneumonia and obstructive bronchial syndrome in children and lower airway disease in the elderly) as compared to the Metropolitan Region.
Prieto C
María José
MJ
Unidad de Salud Respiratoria, Ministerio de Salud, Chile.
Mancilla F
Pedro
P
Astudillo O
Pedro
P
Reyes P
Alvaro
A
Román A
Oscar
O
D000208:Acute Disease; D000293:Adolescent; D000328:Adult; D000368:Aged; D000393:Air Pollutants / Q000633:toxicity; D000397:Air Pollution / Q000009:adverse effects*; D002648:Child; D002677:Chile / Q000453:epidemiology; D002908:Chronic Disease; D004781:Environmental Exposure / Q000009:adverse effects*; D004784:Environmental Monitoring; D062665:Epidemiological Monitoring; D006801:Humans; D052638:Particulate Matter / Q000633:toxicity; D011014:Pneumonia / Q000139:chemically induced / Q000453:epidemiology; D029424:Pulmonary Disease, Chronic Obstructive / Q000139:chemically induced / Q000453:epidemiology; D012141:Respiratory Tract Infections / Q000139:chemically induced / Q000453:epidemiology*; D012720:Severity of Illness Index; D018709:Statistics, Nonparametric; D014504:Urban Health / Q000706:statistics & numerical data
D000393:Air Pollutants; D052638:Particulate Matter