Complete the sentences.
1. Childhood communicable diseases include …
2. The ways of transmission of these diseases are …
3. There are several stages of infectious diseases: …
4. The incubation period is …
5. The period of communicability is …
6. The symptomatic period is when …
7. The recovery period is characterized by …
8. Among viral infectious diseases we can name …
9. Bacterial infectious diseases include …
10. Well-known preventive measures are …