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6 天
Lancet Public Health:英国麻疹疫苗诱导的免疫力长期衰减特征
研究结果显示,英国麻疹病例动态特征与疫苗诱导免疫力衰减假设相吻合。鉴于麻疹的超强传染性,即使缓慢的免疫力衰减也会导致暴发期间疾病负担显著加重,增加已接种和未接种人群的感染风险。研究发现表明,虽然麻疹疫苗在数十年内仍具有较高保护效力,且疾病传播主要与未 ...
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4 天
多伦多卫生官员对儿童呼吸道疾病增加发出警报
Toronto’s Associate Medical Officer of Health, Dr. Vinita Dubey告诉CityNews,“学校通常反映社区的情况,我们确实看到这正是呼吸道疾病季节的高峰期——COVID、流感和RSV都处于高水平,”。 “COVID自秋季以来一直存在并持续处于高水平,流感还在上升,所以可能会变得更严重,幸运的是RSV似乎处于下降趋势。” ...
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