Q: these tests will show evidence of infections, either bacterial, viral, or parasitic.
A: These tests will show evidence of infections, either bacterial, viral, or parasitic.

Q: the blue colour is designed for use when handling food.
A: The blue colour is designed for use when handling food.

Q: try using shampoo daily until symptoms are under control; then start to wash two or three times a week. if one type of shampoo lose their effectiveness after a while, try alternating between two types of anti-dandruff shampoos.
A: Try using shampoo daily until symptoms are under control; then start to wash two or three times a week. If one type of shampoo lose their effectiveness after a while, try alternating between two types of anti-dandruff shampoos.

Q: weekly exposure, all year:
A:
Weekly exposure, all year: