In this issue: Herd immunity and COVID-19, fasting diet for heart health, thermometer basics, proper hand-washing and more

Understand what's known about herd immunity and what it means for coronavirus disease 2019 (COVID-19).

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COVID-19 and herd immunity What you need to know COVID-19 and herd immunity What you need to know Understand what's known about herd immunity and what it means for coronavirus disease 2019 (COVID-19). Read more

Fasting diet: Can it improve my heart health? Periodically following a fasting diet may have heart-health benefits. Find out more. Read more › Advertisement Mayo Clinic does not endorse companies or products. Advertising revenue supports our not-for-profit mission. Advertising & Sponsorship Policy | Opportunities | Ad Choices Liver transplantation for chronic hepatitis C: How common is it? Chronic hepatitis C may lead to liver failure, which has only one treatment: Liver transplant. Find out more about this risk. Read more › Low-phosphorus diet: Helpful for kidney disease? If you have kidney disease, you may need to limit how much phosphorus you eat or drink each day. A dietitian can help you create a custom meal plan. Read more ›

ADDITIONAL HIGHLIGHTS Thermometer basics: Taking your child's temperature Vaginal bleeding after sex Polysomnography (sleep study)

COVID-19 vaccine: Guidance from Mayo Clinic

Mayo Clinic Guide to Better Vision Advances in eye care to help you improve, protect and preserve your vision. Learn more

HEALTHY TIPS & RECIPES The Mayo Clinic Diet online Adopt some healthy new habits for 2021. Get started today The Mayo Clinic Diet online Adopt some healthy new habits for 2021. Get started today How well do you wash your hands? You know that washing your hands is one of the best ways to avoid getting sick. But do you wash properly? Learn more How well do you wash your hands? You know that washing your hands is one of the best ways to avoid getting sick. But do you wash properly? Learn more Trusted health tools Use these simple calculators and self-assessments for personalized health tips. BMI Calculator | Calorie Calculator Trusted health tools Use these simple calculators and self-assessments for personalized health tips. BMI Calculator | Calorie Calculator Symptom checker Use our Symptom Checker to explore possible causes of your symptoms based upon Mayo Clinic's patient care experience. Check symptoms Symptom checker Use our Symptom Checker to explore possible causes of your symptoms based upon Mayo Clinic's patient care experience. Check symptoms Quiche To further lower the fat and cholesterol in this recipe, use 1/2 cup egg substitute instead of the 1 egg and 2 egg whites. See recipe Buttermilk waffles Instead of syrup, try topping each buttermilk waffle with 1/2 cup sliced fresh peaches sprinkled with cinnamon. See recipe

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