The public health crisis is becoming direr as hundreds of thousands flee, many waiting days to escape the country and lacking enough food, water and basic necessities.

Meanwhile, hospitals within Ukraine face an influx of new trauma patients while facing danger themselves from the shelling. The head of a maternity hospital near Kyiv said the facility was hit in an attack on Tuesday, NBC News reported.

Basics like oxygen and antibiotics are running low, along with drugs and blood supplies needed for cancer care. And the availability of critical medications like insulin, is limited, according to aid organizations and news reports.

There are also increasing concerns about the spread of diseases such as COVID-19, as well as polio or tuberculosis, the Washington Post reported.