Long Covid remains a mystery, though theories are emerging

Between 10 to 20 percent of people who contract coronavirus are estimated to have long Covid symptoms — most commonly fatigue, breathlessness and a lack of mental clarity dubbed brain fog — months after recovering from the disease.

EU watchdog reviewing SK Chemicals anti-Covid jab

The European medicines watchdog said Thursday it was reviewing German-based pharmaceutical SK Chemicals’ coronavirus vaccine which uses nanotechnology to combat the virus, amid concern of a possible comeback later in the year.