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Beijing PM2.5 and influenza-like illness
Beijing PM2.5 averaged 100.66 μg/m³ and tracked higher influenza-like illness mainly in flu season.
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Study city and years?
Beijing, 1 January 2008 to 31 December 2014.
Source: Impact of ambient fine particulate matter (PM2.5) exposure on the risk of influenza-like-illness: a time-series analysis in Beijing, China · DOI · quote verified
Mean daily ILI cases?
1763.
Source: Impact of ambient fine particulate matter (PM2.5) exposure on the risk of influenza-like-illness: a time-series analysis in Beijing, China · DOI · quote verified
Mean PM2.5?
100.66 μg/m³ (SD 80.86).
Source: Impact of ambient fine particulate matter (PM2.5) exposure on the risk of influenza-like-illness: a time-series analysis in Beijing, China · DOI · quote verified
Compared with WHO?
More than four times the 25 μg/m³ guideline.
Source: Impact of ambient fine particulate matter (PM2.5) exposure on the risk of influenza-like-illness: a time-series analysis in Beijing, China · DOI · quote verified
Maximum PM2.5?
568.6 μg/m³ on 12 January 2013.
Source: Impact of ambient fine particulate matter (PM2.5) exposure on the risk of influenza-like-illness: a time-series analysis in Beijing, China · DOI · quote verified
Best exposure metric?
2-day moving average of PM2.5.
Source: Impact of ambient fine particulate matter (PM2.5) exposure on the risk of influenza-like-illness: a time-series analysis in Beijing, China · DOI · quote verified
When was PM2.5–ILI strongest?
Flu season (October–April), not significant in non-flu season.
Source: Impact of ambient fine particulate matter (PM2.5) exposure on the risk of influenza-like-illness: a time-series analysis in Beijing, China · DOI · quote verified
Which ages were most affected?
Adults 25–59, then 15–24; least under age 5.
Source: Impact of ambient fine particulate matter (PM2.5) exposure on the risk of influenza-like-illness: a time-series analysis in Beijing, China · DOI · quote verified
PM2.5 monitor?
US Embassy in Chaoyang, Beijing.
Source: Impact of ambient fine particulate matter (PM2.5) exposure on the risk of influenza-like-illness: a time-series analysis in Beijing, China · DOI · quote verified
Flu-season definition?
October–April versus May–September non-flu.
Source: Impact of ambient fine particulate matter (PM2.5) exposure on the risk of influenza-like-illness: a time-series analysis in Beijing, China · DOI · quote verified
Authors' public-health message?
Beijing residents should be considered at increased ILI risk on highly polluted flu-season days.
Source: Impact of ambient fine particulate matter (PM2.5) exposure on the risk of influenza-like-illness: a time-series analysis in Beijing, China · DOI · quote verified