simple , hand draw sketch, sick old man using mask, at transparent effect background

2019ncov aid allergy anxious art asthmatic bacteria bad bronchitis care childcare cold corona cough cure disease draw effect epidemic fever flu h1n5 h5n1 hand health healthy hiv illness illustratrion influenza inhaler isolated line man mask medical medicine mers old outline pension problem pulmonary senior sick sickness simple sketch spora transparent vector virus worm worry