In 1918 a particularly virulent strain of influenza (an RNA virus) wiped out millions of health humans in the prime of their lives. Epidemiologists fear that such a super bug could revisit us in the future. And thus there was quest to find samples of the virus, and make a vaccine against it.
a)Explain why the fears of a recurrence are real.
b)Explain how they could find, isolate and make a vaccine for the 1918 strain.
c)Explain how the vaccine can help produce a humoral immunity.
Please help :)