Infectious Diseases

Caused by bacteria, viruses, fungi, and other organisms, infectious diseases range from mild to life-threatening. They can be spread from person to person, transmitted by insects or animals, or picked up through contaminated food. Many can be prevented with vaccines.

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Former FDA Chief Scott Gottlieb, MD, Calls for Research into UK Surge of New Delta Plus Variant, AY.4.2
While not yet singled out as a concern in the US, the new Delta subtype prompted a reminder that the world needs 'robust systems' to identify up-and-coming threats.