TheCDC and manufacturers (Merck) require that Varicella vaccine be stored in a freezer at:
Temperature range: -50°C to -15°C (-58°F to +5°F)
Acceptable range:-20°C to -10°C (-4°F to 14°F)
Do NOT store in the refrigerator–Refrigeration deactivates the live virus, making the vaccine ineffective.
Store in a stand-alone freezer(not in a refrigerator/freezer combo) to ensure temperature stability.
B. In the refrigerator (2°C to 8°C/36°F to 46°F)❌→Incorrect.
Refrigerationcompromises the vaccine’s potency, leading to inactivation of the live virus.
C. At room temperature (15°C to 30°C/59°F to 86°F)❌→Incorrect.
Room temperature storage causes rapid degradation of the live virus, rendering the vaccine ineffective.
D. In a warmer (30°C to 40°C/86°F to 104°F)❌→Incorrect & Unsafe.
Thisdestroysthe vaccine and makes it completely ineffective.
Centers for Disease Control and Prevention (CDC) Vaccine Storage and Handling Guidelines– States that varicella vaccinesmust be stored in the freezer at -50°C to -15°C (-58°F to +5°F).
Manufacturer (Merck) Guidelines for Varivax– Specifies strict freezer storage requirements.
Proper Long-Term Storage Conditions for Varicella VaccineWhy Not the Other Options?Key References:
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