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Three years News

Canadian study — Pertussis vaccine only effective for three years

Researchers have found that the current Pertussis or whooping cough vaccine is highly effective for the first three years after it is administered, but its effectiveness starts to wane over the next few years, leaving little protection.

Time-lapse video captures 3 years of Sweden's northern lights

A new time-lapse video that captures the northern lights of Sweden has been posted online by aurora photographer Chad Blakley, who spent three winter seasons capturing views of the lights from Abisko National Park in the Swedish province of Lapland.

First Total Lunar Eclipse in Three Years Saturday

Saturday night you will be able to see the first total lunar eclipse in 3 years.

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