Priorix 0.5ml Vaccine
Priorix is a live attenuated vaccine designed to protect against measles, mumps, and rubella (MMR). It is commonly used in children starting from 12 months of age and is also suitable for adolescents and adults who require immunization or boosters.

Pharmaceutical Properties
Each 0.5ml dose of Priorix contains live attenuated virus strains:

• Measles virus (Schwarz strain)

• Mumps virus (RIT 4385 strain)

• Rubella virus (Wistar RA 27/3 strain)

These viruses are weakened but still active, allowing them to stimulate the immune system without causing illness. The vaccine is provided as a lyophilized powder with a pre-filled syringe of diluent, which is reconstituted before subcutaneous injection, typically in the upper arm.

Indications for Use
Priorix is indicated for:

• Routine immunization of children against measles, mumps, and rubella

• Catch-up vaccination in unvaccinated children or adolescents

• Adults without evidence of prior immunity or vaccination

• Outbreak control or travel to regions with high MMR risk

It is part of national immunization programs and may be required for school entry, travel, or occupational safety.

Mechanism of Action
Priorix works by introducing live, weakened viruses that replicate just enough to trigger a strong immune response. The body recognizes these viruses as foreign and produces specific antibodies that provide immunity.

This process allows the immune system to “remember” the viruses. If the person is exposed in the future, the body can quickly defend itself and prevent the onset of disease.

Clinical Protocol in Dubai
In Dubai, the Priorix vaccine is administered according to the UAE national immunization schedule. The protocol typically includes:

• First dose: At 12 months of age

• Second dose: Between 4 to 6 years of age

Unvaccinated adolescents or adults may receive two doses, at least 4 weeks apart, depending on their risk and history.

In cases of travel, outbreaks, or occupational exposure, accelerated schedules or additional boosters may be recommended. Vaccination is documented in official health records required for school enrollment and international travel.

Other Characteristics
Priorix is generally safe and well-tolerated. Mild side effects may include:

• Redness or swelling at the injection site

• Mild fever

• Rash or irritability in young children

• Temporary swelling of glands (especially with mumps component)

Serious allergic reactions are very rare. The vaccine is not recommended during pregnancy or in individuals with severe immune suppression unless under medical supervision.

Conclusion
Priorix 0.5ml is a reliable and effective MMR vaccine widely used in Dubai to protect against three serious viral infections—measles, mumps, and rubella. It plays a vital role in childhood immunization programs and is also crucial for adults without previous vaccination. With a strong safety profile and long-lasting immunity, Priorix supports both individual health and community protection. Following the proper vaccination schedule ensures full protection and peace of mind.