U.S. to pay Pfizer, BioNTech $1.95 billion for COVID-19 vaccine by
Michael Erman and Ankur Banerjee
>> The vaccine, if successful, will be made available to Americans at no cost, although their health insurance may be charged, the U.S. department of Health and Human Services (HHS) said.
Nếu không có insurance th́ sao há ? Có được chủng "free" không??