一些专家说，也许每过十年左右还要做一次加强注射。
Some experts say booster shots might still be needed every 10 years or so.
默克和葛兰素的发言人说所有证据表明疫苗是安全有效的。 没有证据表明需要再加强注射一针。
Spokesmen for Merck and Glaxo say all indications are that their vaccines are safe and effective, and there is no evidence that a booster shot will be needed.
加强患者与医生之间的沟通，可澄清这些误解并有助于减少过多使用注射。
Better communication between patients and providers can clarify these types of misunderstandings and help to reduce injection overuse.
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