Received Jul 18, 2025
| Type | Name | Manufacturer | Dose | Lot | Route / Site |
|---|---|---|---|---|---|
| MMR | MEASLES + MUMPS + RUBELLA (MMR II) | MERCK & CO. INC. | UNK | — | OT |
Consumer calling to report that prior to getting MMR II vaccine, they had the negative titer test. Once vaccine was received, there was no change in negative titer results. Consumer did not report any side effect. Permission to contact HCP was not gi; This spontaneous report was received from a 66 years-old female patient, referring on herself. The patient's concurrent conditions included Collagen Disorder. Medical history and concomitant therapies were not reported. On an unknown date, prior to getting the Measles, Mumps, and Rubella (Wistar RA 27-3) Virus Vaccine, Live (M-M-R II), she had the negative titer test. On 27-Apr-2025, the patient was vaccinated with a dose of Measles, Mumps, and Rubella (Wistar RA 27-3) Virus Vaccine, Live (M-M-R II) diluted with a sterile diluent (MERCK STERILE DILUENT), administered by Intramuscular route (lot numbers and expiration dates were not reported) as MMR II Vaccine (prophylaxis). On an unspecified date in 2025 (reported as "Once vaccine was received"), the patient stated that there was no change in negative titer results. At the reporting time, the outcome negative titer results was unknown. The causal relationship between the event of negative titer results and the vaccination with Measles, Mumps, and Rubella (Wistar RA 27-3) Virus Vaccine, Live (M-M-R II) was not provided. Lot # is being requested and will be submitted if received.
Collagen disorder
Sterile diluent
Test Name: Titer test; Test Result: Negative ; Result Unstructured Data: prior to getting the vaccine; Test Date: 2025; Test Name: Titer test; Test Result: Negative ; Result Unstructured Data: Once vaccine was received