Which hygine claim is supported by reasearch

True or false mucous membranes destroy pathogens on the outer body surface, at body openings.

What type of medicine to people take if they are lactose intolerance

What is difference between an epidemic and a pandemic? a) an epidemic is a disease; a pandemic is a treatment.b) an epidemic is restricted to a local region; a pandemic is global.c) an epidemic has low mortality; a pandemic has higher mortality.d) an epidemic is caused by a bacterial infection; a pandemic is caused by a viral infection.