IS_Unit12_Checkpoint 12.8_E

1(a) All infectious diseases are caused by viruses.

• True

• False

1(b) Dengue fever is transmitted by water and food.

• True

• False

1(c) We can prevent infectious diseases by practising good personal hygiene.

• True

• False

1(d) Vaccination works by preventing pathogens from entering the body.

• True

• False

2(a) Can this method prevent the spread of influenza?

• Yes

• No

2(b) Can this method prevent the spread of influenza?

• Yes

• No

2(c) Can this method prevent the spread of influenza?

• Yes

• No

2(d) Can this method prevent the spread of influenza?

• Yes

• No

2(e) Can this method prevent the spread of influenza?

• Yes

• No

2(f) Can this method prevent the spread of influenza?

• Yes

• No