Byzantine health plans. Impoverishing deductibles. Exorbitant drug costs. Soul-crushing surprises lurking in the fine print.

The American health care system is — to put it mildly — totally perplexing, an exercise in patience and a test of financial resilience.

And that’s for its participants.

So imagine what the system must look like to people from other countries, especially those with universal health care, where citizens don’t live in fear that the next bout of the sniffles might somehow lead to bankruptcy.

In the video above, we gathered people from around the world and introduced them to the American health care system. We presented them with dizzying examples of insurance plan options. We showed them how much medical services cost. And we revealed some of the survival strategies of the tens of millions of Americans who are uninsured (drug purchases in Mexico, GoFundMe campaigns, consultations with “Dr. Google”).

Their reaction? Astonishment, horror, anger and disgust.

One woman spoke about intensive…

Novel mRNA vaccines for SARS-CoV-2 have been authorized for emergency use. Despite their efficacy in clinical trials, data on mRNA vaccine-induced immune responses are mostly limited to serological analyses. Here, we interrogated antibody and antigen-specific memory B cells over time in 33 SARS-CoV-2 naïve and 11 SARS-CoV-2 recovered subjects. SARS-CoV-2 naïve individuals required both vaccine doses for optimal increases in antibodies, particularly for neutralizing titers against the B.1.351 variant. Memory B cells specific for full-length spike protein and the spike receptor binding domain (RBD) were also efficiently primed by mRNA vaccination and detectable in all SARS-CoV-2 naive subjects after the second vaccine dose, though the memory B cell response declined slightly with age. In SARS-CoV-2 recovered individuals, antibody and memory B cell responses were significantly boosted after the first vaccine dose; however, there was no increase in circulating antibodies, neutralizing titers, or antigen-specific…