Gavi works to expand access to vaccines for children in some of the world’s poorest countries. Health experts say the move could have deadly consequences.

The Gates Foundation said on Tuesday it will commit $1.6 billion over the next five years to support Gavi, a public-private partnership that helps buy vaccines for the world's poorest children. The number of kids dying around the world will likely go up this year because of the massive cuts to foreign aid,

The secretary of health and human services said that funding will be curtailed until Gavi, the Vaccine Alliance, takes into account the science of vaccine safety in its campaigns.