Typhoid
Bacteria that causes Typhoid fever + shape
salmonella typhi
- gram neg bacilli
Bacteria and shape
vibrio cholerae
- gram negative rods
Bacteria
staphylococcus aureus
bacteria and shape
bordetella pertussis
- gram negative rod
site of infection, transmission
- intestinal infection
- fecal-oral route, close contact with patients or carriers, contaminated water/food, flies and cockroaches
site of infection and transmission
- attacks microvilli of the gut brush border
- transmitted through contaminated water (fresh or salt)
what does MRSA stand for?
site of infection
Methicillin-resistant staphylococcus aureus
- infects blood, bone, heart, lungs
causes what (with infection)?
cause of whooping cough
How long is someone with typhoid contagious for?
Can be contagious for days to years
how does cholera infect?
Secretes enterotoxins
- prolonged hypersecretion of water and electrolytes
- diarrhea
- profound dehydration/circulatory collapse
- shock/acidosis
what infections is staphylococcus aureus responsible for?
boils, pimples, wound infections, necrotizing fasciitis, TSS, food poisoning, conjunctivitis (pink eye), pneumonia
incubation
6-21 days incubation
Typhoid treatment
antibiotics (there are many antibiotic-resistant strains, antipyretics, rest
What percentage of cholera infections are asymptomatic?
~60-70% of cholera infections are asymptomatic
Staphylococcus aureus + antibiotics
staphylococcus aureus is often resistant to penicillin and many other antibiotics
duration of illness
6-10 weeks
symptoms of typhoid
fever, abdominal pain, fatigue, headache, early constipation, later diarrhea, rosy spots
Later on:
- significant weight loss, confusion, psychosis, high risk of hemorrhage.
cholera incubation
incubation period of 1-4 days
Staphylococcus Epidermis
- not a pathogen
- retards growth of fungi
- lives on skin and mucous membranes
transmission
contact via aerosolized droplets
symptoms
- inspiratory whoop followed by vomiting
- minimal to absent fever
- initially mild URT symptoms (1-2 weeks)
- most contagious (2-4 weeks)