A Flu Vaccine Is Needed Seasonally to Be Effective but a Polio

question 57

Multiple Choice

A flu vaccine is needed seasonally to be effective but a polio vaccine is only needed once.The best explanation of this is ________.

• A) the flu vaccine is substantially weaker than the polio vaccine
• B) exposure to flu vaccine produces no memory cells from proliferating B-lymphocytes
• C) the polio virus is substantially weaker than the flu virus
• D) the flu has several strains that change seasonally

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Guidance provided by a qualified lawyer or law firm regarding the law or a specific legal issue.

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Fees paid in advance to a lawyer for legal services, which are then billed against as work is done.

Provincial Law Societies

Legal organizations within specific provinces that regulate the practice of law and maintain professional standards.

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A bank account managed by one party for the benefit of another, often used to securely hold client funds in various professions.