"I have called for a full investigation of the circumstances that led to this devastating incident that I do not take lightly," he said.
"There are already processes that will determine whether negligence is a factor, and if so, be badured that those processes will be implemented to the letter to ensure that the tragedy does not happen again and that those responsible respond."
Leausa Take Naseri, director general of health, said that she has suspended the vaccination program until the investigation is completed. He also requested a forensic autopsy for the two babies, since the deaths are also being investigated by the police.
"We are also concerned about the safety of our workers, especially the nurses who participated because it is now easily blamed – the finger points towards the nurses," Naseri said.
Generally administered in two doses in early childhood, the triple vaccine protects against three diseases: measles, mumps and rubella.
"Most children in the world receive this vaccine or vaccines similar to this one", Helen Petousis-Harris, a vacunologist at the University of Auckland, told CNN. "We have safety data on the vaccine, we understand the effects really well, this type of cases is extremely rare."
In addition, he said, infant mortality has been reduced in many countries that use these vaccines.
"Each country has a vaccine program that has proven to be very safe," he added. " At the moment we have to understand what happened to be able to elaborate strategies that guarantee that it does not happen again, there are many things that we do not know about (deaths)"