I The basic features of communicable diseases 

1.pathogens: microorganisms parasite 

2.infectivity

3.epidemic features 

4.immunity

II The difference and similarities between infectious and communicable diseases 

CD is a part of AD . All CDs belong to AD , but not all AD equal to CD.

they all have pathogens but only CD have infectivity and epidemic features

III infection spectrum 

The five different outcomes of infection process

1.the elimination of pathogens 

2.convert infection 

3.overt infection

4.carrier state 

5.patent infection 

iv the common fever tapes of CD

1.sustained fever : typhia  typhus 

2.remittent fever : septcemia

3.intermittent fever : malaria

4.relapsing fever : relapsing fever / Cyprus 

5.irregular fever : Influenza 

v prevention of the CD

elimination of the pathogens 

cut the route of transmission  

protection of the susceptible humans