Although we often vaccinate for Coronavirus, we do so out of habit referring back to a time when we did not realize how benign Coronavirus diarrhea actually was.
Although we often vaccinate for Coronavirus, we do so out of habit referring back to a time when we did not realize how benign Coronavirus diarrhea actually was.
虽然我们经常对冠状病毒进行免疫，我们也不知道光状病毒的腹泻怎么发生的。