danger zone stop epidemic virus concept infection critical number density susceptible hosts
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danger zone stop epidemic virus concept infection critical number density susceptible hosts |
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| navigate by keyword : stop epidemic man mask infection protective virus pandemic medicine medical syndrome open palm gesture danger zone concept critical number density susceptible hosts threshold lab analysis antibiotic bacteria coronavirus diagnosis disease doctor fever flu health hematology hospital ill illness nurse outbreak pneumonia quarantine respiratory risk vaccine caution |
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| Danger zone. Stop epidemic. Virus concept. Epidemic infection. Critical number or density of susceptible hosts. Epidemic threshold. Man in medical lab. Black and white. Protective mask. Open palm stop gesture. |
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