Eight babies arrived at NorthBay Medical Center in Fairfield within a short span of each other this fall — four sets of twins landing nearly simultaneously at a hospital whose entire neonatal intensive care unit holds just 16 beds. For the families involved, it was a personal surprise. For the hospital's medical staff, it was something closer to a statistical anomaly.
Dr. Elena Minakova said four sets of twins arriving in such a short period is very unusual for a community NICU with 16 beds, according to CBS Sacramento. The hospital, located in Fairfield, California, is home to a Level III NICU that serves as the primary referral center for premature and critically ill newborns across Solano County, according to NorthBay Health, which cares for nearly 180 infants there each year.
Among the mothers was Mallory Brady, who had endured two miscarriages before this pregnancy. Learning she was having twins felt, in her words, like the universe correcting a mistake, she said, per the same report. Brady said she was shocked to learn she was having twins at all.
Shock, Surprise and Small Bodies Carrying Double
Brady was not alone in her disbelief. Tracy Leonardo said she was very surprised to learn she was expecting two babies, while Shayna Lagares said she was in shock and wondered whether her body could bear a twin pregnancy because she is small, the station's report notes.
Dr. Brian Montenegro explained that twins are often born prematurely simply because there is limited room for multiple babies in the womb, per the same account. That physiological reality lines up with established obstetric guidance: the American College of Obstetricians and Gynecologists has long indicated that twin pregnancies carry significantly higher rates of preterm birth before 37 weeks compared to single pregnancies, making early delivery planning and NICU readiness standard protocol, according to the American College of Obstetricians and Gynecologists. Multiple gestations also call for early delivery planning and NICU readiness.
A National Decline Makes the Local Cluster Stand Out
The timing of Fairfield's twin cluster is notable against a very different national trend. The twin birth rate across the United States declined 11% between 2014 and 2024, falling from 33.9 to 30.1 twins per 1,000 total births, according to a Centers for Disease Control and Prevention report on national health statistics. Total infant births from twin deliveries dropped 19% over that same decade, from 135,336 down to 109,195, the CDC data shows.
The twin birth rate fell 27% for women ages 35 to 39, per the CDC figures. Reproductive medical practices have increasingly favored single-embryo transfers during fertility treatments to minimize pregnancy risks, a shift that has pushed the national twin rate downward even as Fairfield's NICU absorbed four sets at once.
A clinical review cited in maternal health research indicates that twin pregnancies account for roughly 20% of all premature births nationwide, with about 60% of twins born before 37 weeks gestation, according to the American Journal of Obstetrics & Gynecology. Even so, only about 10.7% of twins are born before 32 weeks, the same research notes. For uncomplicated dichorionic twin pregnancies, where each baby has its own placenta and amniotic sac, standard obstetric consensus targets delivery between 37 and 38 weeks gestation to minimize perinatal risks, according to ObGyn Intelligence.
Four Decades of Growth Behind the Fairfield NICU
NorthBay's NICU has grown considerably since it first opened in 1985 with just three beds, expanding over four decades to its current 16-bed footprint — a milestone marked by an official Fairfield mayoral proclamation last September, according to NorthBay Health. That growth has positioned the unit to provide 24/7 care for infants born at 28 weeks gestation or later.
NorthBay Medical Center's NICU cares for nearly 180 infants each year, per NorthBay Health. The health system also provides neonatal intensive care. NorthBay Medical Center is located in Fairfield, according to the American Hospital Directory.
