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Twinrix, a vaccine for hepatitis A and B, generally provides long-lasting immunity. Studies suggest that the protection against hepatitis A can last for at least 25 years, while immunity to hepatitis B often remains effective for at least 20-30 years, and possibly longer. However, individual responses to vaccines can vary, so it's advisable to consult a healthcare provider regarding the need for booster doses.

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1w ago

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Continue Learning about Astronomy

Is the main sequence lifetime of a low mass star the same as the lifetime of the sun?

No. The less massive a star, the longer it will last. A main sequence star half the mass of the sun can be expected to last about 5 times longer.


How long can a tornado last a lifetime?

A typical tornado lasts one to five minutes. The longest-lived tornado on record lasted for three and a half hours.


How does the main-sequence lifetime of a star compare to its entire fusion lifetime?

The main-sequence lifetime is a phase in a star's life when it fuses hydrogen into helium in its core. This phase typically lasts about 90% of a star's total fusion lifetime. After the main sequence, a star may continue to fuse other elements, depending on its mass, which will determine the total duration of its fusion lifetime.


What makes a Grand Seiko different from other watches?

The Grand Seiko watch was first sold 50 years ago. Each watch is designed with durability and reliability. It is intended to last a lifetime. The Grand Seiko set a new standard for watchmaking.


If The light you see from the North Star was emitted in 1583 and takes 430 light years to get to earth does that mean it should be burning out soon?

No. A few hundred years is insignificant in the lifetime of a star. Even the shortest-live stars last for millions of years. Polaris is a three star system. The main star, Polaris A will probably last for another few tens of millions of years while the other tow stars will last for another few billion years.