Checkpoint: how illness spreads
Five questions. Try each one. A real worry goes to a parent, a teacher or a doctor.
Which side of health is about the people around you?
What is a pathogen?
Which insect lays eggs in still water and can carry a pathogen?
A body meets the same germ a second time. What usually changes?
Which of these is a barrier that is part of the body?
0 of 5 answered