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    • How long it took to develop 13 vaccines in history

      How long it took to develop 13 vaccines in history

      Business Insider via Yahoo News· 10 months ago

      A pharmacist prepares the Pfizer-BioNTech vaccine.Jessica Hill/AP Photo Scientists raced to develop COVID-19 vaccines at record speed. Vaccines often...

    • What Is Salmonella?

      What Is Salmonella?

      Health via Yahoo News· 2 months ago

      Giselleflissak / Getty Images Medically reviewed by Sameena Zahoor, MD Salmonella is a group of bacteria that cause a salmonellosis infection—a foodborne...

    • What Is Bleach? How Bleach Works

      What Is Bleach? How Bleach Works

      HowStuffWorks via Yahoo News· 6 months ago

      If you open up the cupboards of most kitchens in America, you'll probably find bleach. This useful chemical has many benefits -- it can bring out...