A poll on Monday showed some 42% of Britons would not offer shelter to refugees, in a hardening of UK attitudes towards those fleeing war and persecution.
The World Health Organization says there has been a surge in the number of people contracting the mosquito-borne viral infection in Yemen since the start of the war.
Detractors of an Amnesty report that blames Houthi anti-aircraft munitions for the majority of civilian casualties in Sanaa target human rights activists.