1.
The prior infection with SARS-CoV-2 study (PICOV) in nursing home residents and staff : study protocol description and presentation of preliminary findings on symptoms
2.
Extending influenza surveillance to detect non-influenza respiratory viruses of public health relevance: analysis of surveillance data, 2015-2019, Belgium
Monitoring of human coronaviruses in Belgian primary care and hospitals, 2015-20: a surveillance study