美国各州将RSV免疫窗口延长至4月份,因为春晚疫情蔓延. U.S. states extend RSV immunization window through April amid late spring spread.

呼吸道同胞病毒 (RSV) 在今年春天比平常传播迟,导致婴儿住院的数量增加. Respiratory syncytial virus (RSV) is spreading later than usual this spring, causing higher hospitalizations among infants. 作为回应,几乎所有美国州都将RSV免疫接种的时间延长到4月底以提供持续保护. In response, nearly all U.S. states have extended the window for RSV immunizations through the end of April to provide continued protection.