BIOLOGY

VIRUSES

• Need a host to survive
• Have a protein shell
• Have DNA or RNA
• Invade cells
• Turn the cell into what is essentially a virus factory

BACTERIA

• Don’t need a host
• Can live in extreme environments
• Can be killed by antibiotics
• Can live in extreme environments
• Is a living thing

INNATE IMMUNE SYSTEM

• Responds quickly and immediately to any external stimuli
• Causes inflammation, rush of white blood cells, kills bacteria if it can catch it
• White blood cells eat bacteria

ADAPTIVE IMMUNE SYSTEM

• Recognizes non-self and not self
• Antibodies float around cell, flag any foreign invaders, and kill them

PUBLIC HEALTH

• Take care of the public, keep them safe and healthy
• Surveillance, Risk Factor Identification, Intervention Evaluation, Implementation