In the graph, interpret the data that are shown regarding the response of a large number of infants to vaccination from dangerous rotavirus infection. Which of the hypotheses is NOT supported by these data results?

Question

This figure shows graphed medical research results from a study on a new vaccine. The research was done in an effort to determine if a new vaccine would be effective in preventing potentially dangerous rotavirus infections in infants. Green data bars represent occurrence of infant cases that had normal rotavirus strains that aren't critically dangerous. Blue data bars represent occurrence of infant cases that had more dangerous rotavirus strains that can hospitalize or lead to fatality of infants.

A. The low dose of the vaccine reduces incidence of illness from any rotavirus in general, and also severe rotavirus.

B. The new vaccine is ineffective in protecting infants from any rotavirus infection.

C. Hypotheses about the vaccine doses can't be evaluated because the placebo group is biased, with high incidence of illness in those infants.

D. Medium and high doses of the vaccine are more effective at reducing severe rotavirus illnesses than reducing any rotavirus.

E. The high dose of the new vaccine does not offer any stronger protection from any rotavirus infection than the medium dose.

Answer 1

B. The new vaccine is ineffective in protecting infants from any rotavirus infection.