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Author Question: A flu vaccine is needed seasonally to be effective but a polio vaccine is only needed once. The best ... (Read 87 times)

meagbuch

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on: May 27, 2020
A flu vaccine is needed seasonally to be effective but a polio vaccine is only needed once. The best explanation of this is ________.
◦ the flu vaccine is substantially weaker than the polio vaccine
◦ exposure to flu vaccine produces no memory cells from proliferating B-lymphocytes
◦ the flu has several strains that change seasonally
◦ the polio virus is substantially weaker than the flu virus
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Marked as best answer by meagbuch on May 27, 2020

parker125

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Reply #1 on: May 27, 2020
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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meagbuch

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Reply 2 on: May 27, 2020
Thanks for the timely response, appreciate it

emsimon14

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Reply 3 on: Yesterday
Excellent

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