Why do vaccine makers have to guess which flu strains will be active months before the flu season begins?
A. It is difficult to convince people to get vaccinated. O C. Vaccines must be administered over months. OB. Transporting flu shots to doctors takes time. D. Vaccines take a long time to make

Vaccines are chemicals or drugs that are preventive in nature. Most times, they are made up of weak strains of the disease that they are designed to prevent.

When injected into the host, the vaccine trains the host's antibodies to identify and destroy the weakened strain of the disease, hence preparing it against the real ailment.

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Why do vaccine makers have to guess which flu strains will be active months before the flu season begins? A. It is difficult to convince people to get vaccinated. O C. Vaccines must be administered over months. OB. Transporting flu shots to doctors takes time. D. Vaccines take a long time to make

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Why do vaccine makers have to guess which flu strains will be active months before the flu season begins?
A. It is difficult to convince people to get vaccinated. O C. Vaccines must be administered over months. OB. Transporting flu shots to doctors takes time. D. Vaccines take a long time to make