surgical mask syringe

ailment bacteria biohazard bird breath breathe chinese clean cleaning cloth cold congested contagious contamination danger disease droplets earth epidemic epitemic fabric face flu germs global h1n1 health healthcare hongkong ill illness immune immunize infectious influenza inject injection inoculate inoculation load mask pandemic pig population prevention protection quarantine respiatory sars serum shot sick sickness sneeze sneezed sneezing sniffles sniffling spanish surgical swine symptoms syringe sysetm unhealthy vaccinate vaccination vaccine virulent virus world