回复：我觉得上daycare好。另外RSV 是什么呀？

you are lucky if you do not know what is RSV :)

"Respiratory syncytial virus (RSV) is the most common cause of bronchiolitis and pneumonia among infants and children under 1 year of age..."

Being concerned with the higher chance of exposure to virus in group daycare, I chose family faycare as the midway. But he seems rather unlucky to get RSV and bronchiolitis twice.