Kim SY, et al. - In this nested case-control study involving 3819 candidates, researchers assessed the connection between meteorological conditions [ie, temperature, humidity, nitrogen dioxide (NO₂), particulate matter less than 10 μg (PM₁₀, μg/m³)] and/or air pollution and peritonsillar abscess formation. Findings suggested an association of abscess formation with high concentrations of NO₂ and PM₁₀. Overall, the authors concluded that NO₂ and PM₁₀ air pollutants can be risk factors for the formation of peritonsillar abscess.