2017/11ルイジアナの長期介護施設で旧コロナNL63の集団感染発生
患者20人中6人は肺炎で入院、その内3人死亡

Severe Respiratory Illness Outbreak Associated With Human Coronavirus NL63 in a Long-term Care Facility
https://www.medscape.com/viewarticle/903307