Canada has so far recorded a total of 25,111 deaths from COVID-19 and more than 1.3 million cases overall. The ban on Indian and Pakistani flights is part of a series of restrictions Canada has imposed to lower the transmission of the virus, including curbs on non-...
“我们需要至少 70% 至 80% 的儿童接种这种疾病的疫苗,以控制感染人数。一旦疫苗接种率低于这个数字,我们就有可能看到这些疾病再次卷土重来,而这些疾病在过去几十年里在加拿大几乎已经被根除。”儿科医生兼 Kidcrew 创始人 Dina Kulik 博...