a bald headed man talking about the human body
a guy is talking about the marburg virus and its effects on organs and tissues
a man explains the marburg virus has many of the same symptoms as ebola
a man is talking about a deadly virus
a man is talking about health
a man is talking about viruses
a man speaks to a camera for a video segment
a man talks about a very serious virus
a man talks about a virus
a man talks about diseases
a man talks about how scary the marburg virus is and its symptoms
a man talks about illness
a medical information showing in this clip
a person is explaining something
a science information video
its abour marburg virus explain ny a man
man discussing an element of energy
man talking about diseases
man talking about the marburg virus
man discussing an element of energy