alphabet letters cards and medical gauze mask on wooden table. covid 2019, selfisolation, distant learning, home education

2019 2019ncov airborne alphabet alphabets background black breathe cards concept corona coronaviridae coronavirus cough covid covid19 disease distant education epidemic face flu gauze health healthcare home ill illness infection influenza isolation learning letters mask medical medicine mers online orthocoronavirinae pandemia pandemic prevent prevention preventive prophylaxis protect protection protective public quarantine remote respiratory sars sarscov2 school selfisolation service stay study studying table virus viruses wearing wooden