The risk of long COVID was two to three times higher after the initial infection (14.8%) than after first (5.8%) or second (5.3%) reinfections.
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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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.
Also, Novavax says its vaccine candidate shows 96% efficacy against COVID-19.
In a review of 65 studies from around the world, pooled data indicate that one in five healthcare workers (HCWs) have experienced moderate depression, anxiety, and/or post-traumatic stress disorder (PTSD) during the COVID-19 pandemic, according to a study published this week in PLOS One.
Antibodies in those previously infected were 10 to 45 times higher after 1 dose than other vaccine recipients'.
Also, regulators in Europe recommend the J&J vaccine for emergency use, and the Pfizer vaccine shows very high efficacy against both symptomatic and asymptomatic infection.
Community exposure increased healthcare worker's risk of infection 3.5 times.
