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The relationship of meteorological conditions to the epidemic activity of respiratory syncytial virus

机译：气象条件与呼吸道合胞病毒流行性的关系

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摘要

Our aim was to obtain knowledge of how meteorological conditions affect community epidemics of respiratory syncytial virus (RSV) infection. To this end we recorded year-round RSV activity in nine cities that differ markedly in geographic location and climate. We correlated local weather conditions with weekly or monthly RSV cases. We reviewed similar reports from other areas varying in climate. Weekly RSV activity was related to temperature in a bimodal fashion, with peaks of activity at temperatures above 24-30℃ and at 2-6℃. RSV activity was also greatest at 45-65% relative humidity. RSV activity was inversely related to UVB radiance at three sites where this could be tested. At sites with persistently warm temperatures and high humidity, RSV activity was continuous throughout the year, peaking in summer and early autumn. In temperate climates, RSV activity was maximal during winter, correlating with lower temperatures. In areas where temperatures remained colder throughout the year, RSV activity again became nearly continuous. Community activity of RSV is substantial when both ambient temperatures and absolute humidity are very high, perhaps reflecting greater stability of RSV in aerosols. Transmission of RSV in cooler climates is inversely related to temperature possibly as a result of increased stability of the virus in secretions in the colder environment. UVB radiation may inactivate virus in the environment, or influence susceptibility to RSV by altering host resistance.
机译：我们的目标是了解气象条件如何影响呼吸道合胞病毒（RSV）感染的社区流行病。为此，我们在9个城市中记录了全年的RSV活动，这9个城市的地理位置和气候存在明显差异。我们将当地的天气状况与每周或每月的RSV病例相关联。我们回顾了其他因气候而异的地区的类似报告。每周RSV活性以双峰方式与温度相关，在高于24-30℃和在2-6℃的温度下具有峰值活性。在相对湿度为45-65％时，RSV活性也最大。 RSV活性在三个可以测试的位置与UVB辐射成反比。在持续高温和高湿度的地区，RSV活动全年持续，在夏季和初秋达到峰值。在温带气候下，冬季RSV活性最高，与温度降低有关。在全年温度仍然较低的地区，RSV活动再次变得几乎持续。当环境温度和绝对湿度都很高时，RSV的社区活动非常重要，这可能反映了RSV在气溶胶中的稳定性更高。在较冷的气候中，RSV的传播与温度成反比，这可能是由于较冷的环境中病毒在分泌物中的稳定性提高所致。 UVB辐射可能会使环境中的病毒失活，或通过改变宿主抵抗力而影响对RSV的易感性。

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