several viruses of coronavirus-sars-cov-2 which causes covid-19 is now a

breath cartoon china cold corona coronavirus cough coughing diagnose diagnosis disease drawing epidemiology fever flu globally handdrawn headache health healthcare healthy illness illustration infection infectious influenza medical mers outbreak pandemic peplomers pneumonia respiratory risc sars sarscov2 shortness sneezing spike spikes spread symptom symptoms treatment vaccine vector viral virion virus