President Joe Biden asked Congress for $33 billion to support Ukraine - a dramatic escalation of U.S. funding for the war with Russia - and the Ukrainian president pleaded with lawmakers to give the request a swift approval.
Pfizer on Tuesday said results of Phase 2 clinical trials of its experimental Lyme disease vaccine delivered “positive” results, including among pediatric trial participants.
Moderna on Thursday asked U.S. regulators to authorize low doses of its COVID-19 vaccine for children younger than 6, a move toward potentially allowing shots for millions of youths by summer.
"Antibodies produced by vaccinated and boosted people may not stop omicron SARS-CoV-2 strain from entering cells as well as it stops original virus," say Johns Hopkins researchers.
