ID 201802054 © Digicomphoto | Megapixl.com
Sharing is not just caring, it's also about giving credit - add this image to your page and give credit to the talented photographer who captured it.:
ahn analysis avian bacteria bacterium biology bronchial cell cells concept conceptual contagion contagious contamination diagnosis disease epidemic epidemiology fever flu health human humans hygiene image immune infected infection infections infectious influenza medical medicine micro microbe microbiology microscopic molecules organism outbreak pandemic pathogen pulmonary research retrovirus science sick sickness system vaccine viral virology virus viruses