MRSA/Staph is often misdiagnosed as spider or insect bites . • MRSA/Staph spreads by infected skin to healthy skin contact as well as infected objects to healthy skin. It can enter healthy, clean, undamaged skin through such contact. • Washing your hands with soap and warm water can prevent the spread of MRSA/Staph. • MRSA/Staph lives on skin and survives on objects, such as towels and exercise equipment for 24 hours or longer. • If you think you may have MRSA/Staph, consult your doctor or healthcare provider. • For all skin infections, dispose of bandages properly and wash your hands frequently to avoid spreading germs to others.
An animal (nonhuman) that can transmit an infectious agent to humans
Two types: mechanical and biological
Biological animal vectors: The infectious agent must incubate in the animal host as part of the agent’s developmental cycle; eg, the transmission of malaria by infected mosquitoes
Mechanical animal vectors: The infectious agent is physically transmitted by the animal vector, but the agent does not incubate or grow in the animal; eg, the transmission of bacteria sticking to the feet of flies
GRAM POSITIVE COCCI S. aureus hemolytic mannitol yellow + - Staphylococcus (Clusters) Streptococcus (pairs & chains) Catalase BETA: Bacitracin S. pyogenes (group A) CAMP/ Hippurate S. agalactiae (group B) Hemolysis Coagulase S. epidermidis nonhemolytic (usually) mannitol white ALPHA: Optochin /Bile Solubility S. pneumoniae GAMMA: Bile Esculin 6.5% NaCl Group D* Enterococcus Bile Esculin 6.5% NaCl Group D* Non- Enterococcus (*can also be alpha hemolytic) Note: S. viridans is Is alpha hemolytic and negative for all the tests below below + + + + + + + - - Summary Figure (Identification Scheme)