infant

This allows them to learn essential skills, including caring for infants and cooking as well as hunting and gathering, through a process that is often subtle and nonverbal.

But in infants and seniors, these viruses can cause severe pneumonia and even death.

The disease affects roughly 24 million people a year worldwide and primarily impacts infants and those with weakened immune systems.

Letby, 34, from Hereford, is serving 15 whole-life orders after she was convicted at Manchester Crown Court of murdering seven infants and attempting to murder seven others, with two attempts on one of her victims.

A senior coroner has warned that more babies could die unless "action is taken", following the deaths of three infants who had received contaminated feed while being cared for in hospital.