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  1. 2023年11月15日 · Research suggests that mutations made the Delta variant up to 50% more transmissible than previous COVID-19 variants. By January 1, 2022, the Delta variant had reached more than 183 countries...

  2. 2023年11月10日 · COVID-19 symptoms of Delta variant With this variant, symptoms usually include runny nose, fever, sore throat, and headache. You're less likely to have coughing or loss of taste or smell.

  3. 2023年8月17日 · What Is the Omicron Variant? In November 2021, the World Health Organization (WHO) first identified the Omicron mutation of the COVID-19 virus as a variant of concern. It quickly became the most...

  4. 2023年12月19日 · This is the most common transmission. When an infected person coughs, sneezes, or talks, droplets or tiny particles called aerosols carry the virus into the air from their nose or mouth. Anyone ...

  5. 2022年8月23日 · What Is the JC Virus? Medically Reviewed by Christopher Melinosky, MD on August 23, 2022. Written by Sunny Sea Gold. Who Gets Sick? Symptoms of PML. Diagnosis. JC Virus, Multiple Sclerosis, and...

  6. Drugs & Medications. Deltasone 2.5 Mg Tablet - Uses, Side Effects, and More. Generic Name (S): prednisone. Uses. Prednisone is used to treat conditions such as arthritis, blood disorders,...

  7. 2023年9月9日 · There are three types of flu viruses: A, B, and C. Type A and B cause the annual influenza epidemics that have up to 20% of the population sniffling, aching, coughing, and running high fevers....

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