Public health, explained: Sign up to receive Dr. Jay K. Varma’s reports in your inbox a day early. Hello and welcome to Healthbeat’s weekly report on stories shaping public health in the United States. This week, I’m highlighting the news that tick season has begun, with cases rising three-fold in the past month. We have good news about one of the most feared infections transmitted by ticks, Lyme disease, and not so good news about a non-infectious disease caused by ticks, alpha-gal syndrome.