New Science eTextbook 4A (UPC)

3 How do infectious diseases spread? How can we prevent them?

1. How do these children marked with

catch different infectious diseases? Write

.

the correct letters in the

A. droplets in the air

B. contact

C. vectors

D. food E. blood

1

2

I don’t need it.

catching dengue fever

catching hand, foot and mouth disease

3

I forgot to put the leftover salmon in the refrigerator last night.

4

having hepatitis B

5

catching the flu

getting food poisoning

2. According to the situations in the pictures, talk about a way to prevent each type of infectious disease. 3. Look for information online and, together with your own experience, talk about more ways to prevent these five types of infectious diseases.

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