"Effectiveness of COVID Tests Against Rising JN.1 Variant in the U.S."

The U.S. is experiencing a resurgence of COVID-19 infections with the new JN.1 variant becoming the dominant strain, accounting for about 44% of cases by mid-December. Despite rising hospitalizations and deaths, the severity of the surge is mitigated by mild infections and sufficient hospital capacity. However, vaccination rates remain low, with only 19% of adults having received the latest shot, raising concerns for vulnerable populations. The CDC continues to monitor the situation, emphasizing the virus as a serious public health threat, particularly in nursing homes where vaccination rates are even lower. Seasonal factors and the transmissibility of the JN.1 variant are contributing to the increased spread, while reduced testing and isolation practices due to cost and policy changes may be exacerbating the situation.