Microbiology 9th Edition by Laura Black, Jacquelyn Black

تمرين 23

Although the initial infections are usually self-limiting, a second infection with a different virus strain can lead to immu nological reactions that produce hemorrhagic disease. This oc curs in:
(a) Dengue fever
(b) Typhus fever
(c) Yellow fever
(d) Rift Valley fever
(e) All of these