Vaccine Vivian — Immunizations: Live Vaccines, Real Contraindications and the Reactions to Expect
A low fever is not a reason to skip a shot — but pregnancy and a suppressed immune system change everything

Vivian checks two things before any live vaccine: is she pregnant, and is this immune system able to handle it?
Vivian separates real contraindications from false ones. LIVE vaccines — MMR, varicella, intranasal influenza, rotavirus — are withheld in pregnancy and in significant immunosuppression, and pregnancy is avoided for about four weeks after MMR or varicella. A mild illness with a low-grade fever is NOT a reason to delay; a moderate to severe febrile illness is. A previous anaphylactic reaction to a vaccine or its components is an absolute contraindication. Expected reactions — soreness, low-grade fever, fussiness — are treated with cool compresses and antipyretics as directed, while difficulty breathing, hives or swelling after a vaccine is an emergency.
Read Vaccine Vivian's full story →The story arc
The setup
A parent asks whether the visit should be rescheduled because the toddler has a runny nose and a temperature of 99.8.
The turn
In the next room, a woman who is 10 weeks pregnant is due for MMR.
The crisis
A child on chemotherapy is scheduled for varicella vaccine.
The save
Vivian teaches every family the same after-visit plan: soreness and a low fever are expected; trouble breathing, hives or swelling means emergency care.
NCLEX study section — Immunizations: Live Vaccines, Real Contraindications and the Reactions to Expect
What this chapter is testing: the recognition cues, the numbers and the priority action.
Study section: Safety & Infection Control
Take this chapter into practice questions on the same topic.