ID Flashcards
benefits of rotavirus vaccine
- prevent severe disease
- decrease dehydration and need for admission
- give at 2 and 4 months
contraindications to rotavirus vaccine
- hypersensitivity to vaccine
- Hx of intussusception
- immunocompromised
evidence of immunity to varicella
- IgG to VZV- natural disease
- documentation of 2 doses of vaccine
- lab confirmed varicella from lesion
- previous Dx of varicella or zoster by health care professional
Varicella vaccine doses
between 12 mo to 12 yrs
min 3 month post first vacc
ontario - 15 mo and 4-6 yrs
For babies exposed to HSV, how long after delivery can they develop symptoms?
4-6 weeks
what are the natural reservoirs of Yersinia ?
Pigs! rodents, rabbits, sheep, cattle, horses, cats and dogs
What population is at a higher risk for yersinia enterocolitica and why?
Yersinia needs Iron so pt with iron overload are at higher risk
- hemochromatosis
- Sickle cell
- Thalassemia
What are the clinical presentations of Yersinia
Terminal ILEUM!!!!
Enterocolitis, diarrhea,fever, abdo pain - n get mesenteric adenitis
Diarrhea is watery, can have blood and mucus.
shed for 1-4 weeks
Systemic infection = spleen or liver abscess, osteo, meningitis,endocarditis, mycotic aneurysms, pharyngitis,pneumonia
Reactive = EN, Arthritis, uveitis
Contamination rate for bag urine?
60%
For girls, sit back ward on toilet
Treatment of yersinia
Usually self limiting
Treat if young, systemic or immonocompromised
Septra or cefotaxime or ceftriaxone
Most specific test for UTI?
Nitrites
only if Gram Neg bug
Most specific for UTI but not most sensitive
Either + Nit or leuk = 90 % sensitive
What bacteria is least likely to cause UTI in healthy child
- E. coli
- Enterobacter
- Klebsiella
- Entetrococcus
- Citrobacter
- serratia
??enterococcus - controvertial
Risk of damage from pyelonephristis in healthy children is ?
False
What grade of reflux needs prophylaxis Abx
Grade 4-5
cystitis treatment as per CPS
Usually teens with dysuria and frequency
PO cefixime for 2-4 days
Most common presentation of c.diff
watery diarrhea
Dx = no culture because of slow turn around
EIA
run on loose stools
Sensitivity high
What can you diagnose on VCUG?
PUV in boys
Reflux
treatment for Mild C. difficile
discontinue precipitant antibiotics
FU
treatment for moderate c. diff
more than >/- abnormal stools no systemic sickness
PO flagyl 30 mg/kg/d div QID for 10-14d
Treatment for severe c.diff - initial presentation
severe systemic toxicity
Vanco PO 40 mg/kg/day QID for 10-14
treatment for first recurrence of c.diff and for second
repeat initial treatment
For 2nd, Vanco in tapered or pulsed reg
Transmission of HCV, risk factors
high viremia
high ALT
HIV co infection
how do you treat severe complicated c.diff
toxic and colitis, low BP, shock, peritonitis, ileus or megacolon
***PO vanco and IV flagyl
if bad ileus, d rectal vanco
Timing of vaccines in elective splenectomy
2 weeks pre
if cannot do - do 2 weeks post