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1·If you have diabetes complications or you're age 65 or older, you may need a five-year booster shot.

你如果有糖尿病并发症，或者年龄为6 5岁及以上，你需要做五年注射一次的支持者。

2·She said she believed that at least one booster shot, and probably more, would be needed over a lifetime.

她说，她认为要得到终身保护至少要加强一针，或许更多。

3·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.

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。