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Immune System May 'Remember' Infections From Previous Coronaviruses

FRIDAY, Jan. 22, 2021 (HealthDay News) -- Previous coronavirus infections might prime the immune system to fight the new coronavirus that causes COVID-19, a new study suggests.

There are numerous types of coronaviruses, including many harmless ones that cause mild upper respiratory infections similar to the common cold.

Besides SARS-CoV-2 -- the virus that causes COVID-19 -- other deadly coronaviruses include MERS-CoV, which caused a 2012 outbreak in Saudi Arabia of Middle East respiratory syndrome, and SARS-CoV-1, the first pandemic coronavirus that caused the 2003 severe acute respiratory syndrome (SARS) outbreak.

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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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