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Study Sheds Light on Why COVID-19 Hits Elderly Hardest

WEDNESDAY, Sept. 30, 2020 (HealthDay News) -- Elderly people who get COVID-19 have lower levels of important immune cells, which may explain why they are more likely than younger patients to have severe symptoms or die, new research suggests.

For the study, the researchers analyzed blood samples from 30 people with mild COVID-19, ranging in age from the mid-20s to late-90s. Compared with healthy people, all of the COVID-19 patients had lower numbers of T cells -- which target virus-infected cells -- in their blood.

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Allergy Information

What Are Seasonal Allergies?

More than 67 million americans suffer from allergy symptoms, including hay fever. But, what is an allergy? What is an allergic reaction? What are common allergy symptoms? What allergy treatments are available?

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What is Pollen?

Pollen is one of the most common allergens in the United States. Pollen is an airborne allergen, which is picked up and carried by the wind. Various trees, grasses and weeds create pollen, which can cause hay fever, irritate your eyes and skin.

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