Chickenpox Flashcards
Incubation
1 -3 weeks
Infectious period
48 hrs before rash - scabbing
Risk of FVS <20/40
1%
Risk of FVS 20-28/40
‘Very small’
Risk of congenital varicella (varicella of newborn) if maternal infection in 4 weeks prior to delivery
50% infected
23% develop clinical varicella
Maternal rash 7 days before - 7 days after delivery
Higher risk of severe varicella of newborn - fatal 20%
Chickenpox exposure
PEP = oral aciclovir / valaciclovir from D7-14 post exposure
VZIG if allergic, within 10/7 of contact
Chickenpox rash
oral aciclovir within 24hrs of rash
IV if severe
Referral to FMU
All women diagnosed with chickenpox; at 16-20 weeks or 5 weeks post infection
Incidence of VZV in pregnancy
3/1000
Incidence of maternal pneumonia in chickenpox
5%