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.:
antibody antigen antivirus attack avian biology bug cartoon cold contagious disease diseased epidemic fever flu forensic germ health hygiene ill infect infected infection infectious investigation medical micro microbe microbiology microscopic mutate mutation pandemic plague poorly science sick sickness stylized swine threat unwell vaccinate vaccine viral virulent virus