In May 2013, a drug-resistant strain of H7N9 bird flu was discovered in China. The implication(s) of a drug-resistant virus strain is(are)
A. that it will be difficult to eradicate.
B. that it could proliferate quickly.
C. that it should be studied carefully.
D. all of the above.
Answer:D
In May 2013, a drug-resistant strain of H7N9 bird flu was discovered in China. The implication(s) of a drug-resistant virus strain is(are)
A. that it will be difficult to eradicate. B. that it could proliferate quickly. C. that it should be studied carefully. D. all of the above.