Among 1497 fully vaccinated health care workers, 39 SARS-CoV-2 breakthrough infections were documented. On follow-up questioning, 31% of all infected workers reported having residual symptoms 14 days after their diagnosis. At 6 weeks after their diagnosis, 19% reported having “long Covid-19” symptoms, which included a prolonged loss of smell, persistent cough, fatigue, weakness, dyspnea, or myalgia.
Nine workers (23%) took a leave of absence from work beyond the 10 days of required quarantine; of these workers, 4 returned to work within 2 weeks. One worker had not yet returned after 6 weeks.
See also MedrXiv preprint: Breakthrough Symptomatic COVID-19 Infections Leading to Long Covid: Report from Long Covid Facebook Group Poll