The quintuplets had minimal chances of survival as they were born underweight and before the due date, Medical Superintendent Aisha Maina of Nakuru level 5 Hospital has said.
All five babies died on Thursday a day after they were delivered.
"It is well documented that with multiple pregnancies, there is a high risk and chances of children surviving with low birth weight is of course minimal," she said.
Speaking to the media, Maina said the four girls and one boy weighed between 500 grams and 650 grams.
"The babies were delivered at six months and had to be incubated for survival," Maina said.
She also said it was the first time for a mother to deliver five babies at the facility.
Maina said Wangui, 25, mother to the five babies visited the hospital's outpatient wing with discomfort, on January 29.
"On checking her, the medics realised that she had multiple pregnancies," Maina said.
She said Wangui was then admitted for observation because she had a high-risk pregnancy.
At the time, the expectant mother's pain exceeded, compelling the medics to do an emergency Caesarian Section to save her and the babies.
But they could only save the mother as the kids passed away while undergoing treatment.
Leah Nyambura, sister to the mother of the quintuplets, has said the parents are devastated over the death of their children.
Leah said two of the five had died on Thursday morning, while the three passed on at around 1 pm when the family received the news.
"I urge members of the public to still support the family as they are not well as I speak," she said.
Leah said the mother is currently undergoing counselling at the hospital.
