This spontaneous report as received from a physician refers to a male patient, currently 11 years of age. The patient's concurrent condition, medical history and drug reactions/allergies were not reported. Concomitant therapy included sterile diluent(DILUENT MRK INJ). On 14-MAR-2018 the patient was vaccinated with improperly stored doses of VARIVAX injection (dose, frequency and route were not reported) (lot # N025932, expiry date: 19-SEP-2019) for prophylaxis. The VARIVAX was exposed to temperature between -7.60 to -13.90 C on 24-JAN-2018, -7.70 to -14.20 C on 25-JAN-2018, -6.50 to -14.20 C on 26- JAN-2018, -6.40 to -14.20 C on 27- JAN-2018, -5.50 to -14.70 C on 28- JAN-2018, -7.70 to -13.80 C on 29-JAN-2018, -8.00 to -14.90 C on 30-JAN-2018, -11.5 to -14.50 C on 31-JAN-2018, -8.00 to -14.80 C on 01-FEB-2018, -6.50 to -14.60 C on 02-FEB-2018, -11.30 to -14.80 C on 03-FEB-2018, 12.50, -8.00 to -14.80 C on 04-FEB-2018, -7.90 to -14.80 C on 05-FEB-2018, -7.60 to -14.80 C on 06-FEB-2018, -7.80 to -14.80 C on 07-FEB-2018, -7.70 to -14.80 C on 08-FEB-2018, -5.90 to -14.40 C on 09-FEB-2018, -9.50 to -14.20 C on 10-FEB-2018, -7.70 to -14.90 C on 11-FEB-2018, -8.80 to -14.30 C on 12-FEB-2018, -8.50 to -14.90 C on 13-FEB-2018, -10.90 to -14.60 C on 14-FEB-2018, -8.10 to -14.60 C on 15-FEB-2018, -8.40 to -14.00 C on 16-FEB-2018, 12.70, -8.40 to -14.90 C on 17-FEB-2018, -6.70 to -14.70 C on 18-FEB-2018, -7.90 to -14.70 C on 19-FEB-2018, -6.30 to -14.80 C on 20-FEB-2018, -6 to -14.80 C on 21-FEB-2018, -7.40 to -14.40 C on 22-FEB-2018, -11.70 to -14.60 C on 23-FEB-2018, -8.40 to -14.70 C on 24-FEB-2018, -6.50 to -14.90 C on 25-FEB-2018, -6.40 to -14.90 C on 26-FEB-2018, -6.90 to -24.20 C on 27-FEB-2018, -6.40 to -14.70 C on 28-FEB-2018, -6.80 to -14.70 C on 01-MAR-2018, -8.40 to -14.80 C on 02-MAR-2018, -8 to -14.90 C on 03-MAR-2018, -7.50 to -14.60 C on 04-MAR-2018, -8.50 to -14.90 C on 05-MAR-2018, -9.90 to -14.60 C on 06-MAR-2018, -5.70 to -14.70 C on 07-MAR-2018, -10.10 to -14.40 C on 08-MAR-2018, -7.60 to -14.70 C on 09-MAR-2018, -12.50 to -14.80 C on 10-MAR-2018, 12.70, -12.40 to -14.60 C on 11-MAR-2018, -6.00 to -14.70 C on 12-MAR-2018, -9.00 to -14.70 C on 13-MAR-2018, -9.20 to -14.70 C on 14-MAR-2018, -6.70 to -14.80 C on 15-MAR-2018, -9.60 to -14.70 C on 16-MAR-2018, -8.10 to -14.70 C on 17-MAR-2018, -7.50 to -14.80 C on 18-MAR-2018, -8.80 to -14.60 C on 19-MAR-2018, -6.40 to -14.70 C on 20-MAR-2018, -8.50 to -14.70 C on 21-MAR-2018, -7.30 to -14.60 C on 22-MAR-2018, -8.00 to -14.90 C on 23-MAR-2018, -11.70 to -14.80 C on 24-MAR-2018, -8.70 to -14.80 C on 25-MAR-2018, -7.60 to -14.80 C on 26-MAR-2018, -6.00 to -14.80 C on 27-MAR-2018, -9.00 to -14.90 C on 28-MAR-2018, -7.90 to -14.80 C on 29-MAR-2018, -9.30 to -14.80 C on 30-MAR-2018, -8.70 to -14.80 C on 31-MAR-2018, -4.80 to -14.60 C on 01-APR-2018, -12.10 to -14.70 C on 02-APR-2018 for 0.25 hours. VARIVAX was exposed to temperature between -13.90 C on 25-Jan-2018, -13.30 C to -14.50 C on 26-JAN-2018, -12.80 C on 27-JAN-2018, -13.50 C on 28-JAN-2018, -12.40 C on 31-JAN-2018, -12.20 C on 03-FEB-2018, -13.20 C on 06-FEB-2018, -6.30 C on 14-FEB-2018, -14.40 C on 16-FEB-2018, -13.50 C on 18-FEB-2018, -14.50 C on 22-FEB-2018, -14.30 C on 24-FEB-2018, -13.00 to -13.70 C on 05-MAR-2018, -13.00 C on 07-MAR-2018, -14.20 C on 08-MAR-2018, -8.10 C on 11-MAR-2018, -13.00 C on 14-MAR-2018, -14.60 C on 19-MAR-2018, -12.20 C on 25-MAR-2018, -12.00 C on 27-MAR-2018 for 0.5 hours. VARIVAX was exposed to temperature between -13.50 C on 29-JAN-2018 for 0.75 hours. VARIVAX were stored in temperature of -14 degree Celsius (C) to -10 C and -9 C to 8 C for unspecified time frames. There was previous temperature excursion (unspecified) reported. A digital data logger was involved. No adverse effects were reported. No product quality complaint was involved. Additional information was not expected. This is one of several reports received from the same reporter.