In addition, the risk of HFMD also showed an increasing trend with increasing SO 2 concentration, whereas an overall decreasing trend was presented with increasing O 3 concentration.
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Effects of extreme meteorological factors and high air pollutant concentrations on the incidence of hand, foot and mouth disease in Jining, China.
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The sentences
The impact of extreme low temperatures peaked on lag day 1 and subsequently demonstrated a decreasing trend, reaching a minimum at lag day 4.