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Did you know?
Vaccines prevent between 2.5 and 4 million deaths every year.
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Autoimmune diseases occur when the immune system destroys its own healthy tissues. When this occurs, white blood cells cannot distinguish between pathogens and normal cells.
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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
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The average adult has about 21 square feet of skin.
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Fatal fungal infections may be able to resist newer antifungal drugs. Globally, fungal infections are often fatal due to the lack of access to multiple antifungals, which may be required to be utilized in combination. Single antifungals may not be enough to stop a fungal infection from causing the death of a patient.