In response to a worsening measles crisis, some Pennsylvania paediatricians are now offering infants as young as six months an early MMR vaccine dose to curb the rapid spread of the virus, which has led to multiple deaths and record case numbers across the state.
Some Pennsylvania paediatricians are offering infants an early measles, mumps and rubella shot as the state’s outbreak deepens, a move doctors say is intended to provide extra protection for babies too young for the routine first dose. NBC10 Philadelphia reported that True North Pediatrics, which serves families in Montgomery, Bucks and Philadelphia counties, has begun giving the additional injection to selected infants as young as six months old.
The early injection, sometimes described as a zero dose, does not replace the standard two-dose MMR schedule children receive later. Instead, it is being used as a precaution for younger babies living in areas where transmission is high. Dr Andy Ludell, medical director at True North Pediatrics, told NBC10 Philadelphia that the practice chose to act proactively because the virus is spreading so quickly.
The outbreak continues to grow at an alarming pace. The Pennsylvania Department of Health said on 23 September that the state had recorded 835 confirmed measles cases across 39 counties, with 164 hospitalisations and four deaths. That compares with 792 cases and 155 hospitalisations two days earlier, showing how rapidly the situation has worsened in just a matter of days.
Those deaths include two Lancaster County infants who were too young to be vaccinated, as well as an unvaccinated 40-year-old woman in Jefferson County and an unvaccinated 18-year-old man in Mifflin County, according to state and local officials. Pennsylvania is the only state to have reported measles deaths this year, and PennLive reported that it now has the country’s worst outbreak.
Doctors are increasingly seeing cases they did not expect to encounter in modern practice. Dr Ronald Goren, an infectious disease specialist at St. Mary Medical Centre and Nazareth Hospital, told NBC10 Philadelphia that the virus is spreading quickly across the state and that clinicians are now facing infections they had not previously seen. He said he did not understand how the situation had become so severe and expected conditions to worsen.
Public health officials are also trying to widen access to protection. The state health department said it has administered more than 38,000 MMR doses in the first three weeks of September, far above the usual monthly pace of about 25,000. It has also delivered more than 4,800 doses at pop-up clinics since the outbreak began in late April, and more than 6,900 doses overall earlier in 2026. The department says the vaccine is 97% effective at preventing measles after two doses.
In one sign of how seriously providers are taking the surge, True North Pediatrics said 20 to 30 patients opted for the early dose over a two-week period, according to NBC10 Philadelphia. Families are being encouraged to speak with their own paediatricians about whether the extra protection makes sense for their children, while state officials continue to run no-cost clinics, including one at the Bloomsburg Fair in Columbia County through 3 October.
Disclaimer: This content is for informational purposes only and is not intended to be a substitute for professional medical judgment, advice, diagnosis, or treatment.
