The new variants have created some concern that mutations in the virus may make the vaccines less effective.

新的變種引起了一些擔憂，即病毒的突變可能會降低疫苗的效果。

The company said it found no reduction in the antibody response against the variant found in Britain, but the South Africa variant caused a reduced response.

該公司表示，它發現針對英國發現的變異體的抗體反應沒有減少，但南非的變異體引起的反應減少。

Madonna is testing a third booster shot, to be sure, but says it's two doses provide protection for at least a year.

麥當娜正在測試第三支助推劑注射，以確定，但說它的兩個劑量提供保護至少一年。

Dr.

博士

Peter Hotez, dean of the National School of Tropical Medicine at Baylor College, said he was only mildly concerned that the vaccine wouldn't be protective because the level of virus neutralizing antibodies still quite high that's six fold reduction should not interfere with protection, although potentially it could cause a slight reduction.

貝勒學院國家熱帶醫學院院長Peter Hotez說，他只是輕度擔心疫苗不會有保護作用，因為病毒中和抗體的水準仍然相當高，這是六倍的減少不應該干擾保護，雖然有可能會導致輕微的減少。

Madonna said the new booster shot could be made available in the future if evidence were to emerge.

麥當娜說，如果未來有證據出現，可以提供新的助推器鏡頭。

That protection declined.

這種保護下降了。

Meanwhile, Pfizer and Biotech have also said tests showed the vaccine is effective against the variant found in Britain, but have not yet disclosed results against the South Africa variant.

同時，輝瑞和生物技術公司也表示，測試顯示該疫苗對英國發現的變種有效，但尚未披露對南非變種的結果。

The variant was first seen in Britain in September and caused a massive surge in cases there and elsewhere.

這種變異體於9月首次在英國出現，並在那裡和其他地方引起了大規模的病例激增。

It's being found in more than a dozen U.

正在十幾家美國。

S states and is expected to be the dominant variant there within six weeks.

S州，預計將在六週內成為那裡的主要變種。