The combined vaccine elicited higher immune response against SARS-CoV-2.
Plaque growth can lead to a higher risk of heart attack, stroke, and other life-threatening cardiovascular events for as long as 1 year.
Post-exertional malaise, or exercise intolerance, was seen in 36% of those with long COVID.
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About 12% of the US population is fully vaccinated, and at least 21% have 1 dose.
The trial wasn't able to assess impact against severe disease because of the relatively young age of participants.
The European Medicines Agency and an expert WHO group are reviewing vaccine data.
Roughly 15.9 million asymptomatic US COVID-19 cases may have gone undetected as of Sep 30, 2020, which would double the cases reported to the Centers for Disease Control and Prevention (CDC) during that time, according to a research letter detailing a 6.6% nationwide SARS-CoV-2 seroprevalence rate.
Findings in more than 2.2 million people suggest B117 has a 61% higher death rate.
Probes by European regulators and AstraZeneca have found no link between the vaccine and blood clotting or bleeding.
In other hopeful news, 1 dose of the Pfizer vaccine may be 63% effective.
Out of 67 intensive care unit (ICU) patients who underwent simultaneous SARS-CoV-2 and Middle East respiratory syndrome coronavirus (MERS-CoV) testing in Saudi Arabia, 8 (11.9%) had coinfections, according to a new Travel Medicine and Infectious Disease study.
The study didn't find any anomalous symptoms or mortality rates, although the researchers say more data are needed around mortality.
The findings add to a growing body of evidence highlighting psychological repercussions.
Meanwhile, more countries announce temporary suspensions of use of the AstraZeneca vaccine.
