U.S. Surgeon General Dr. Vivek Murthy announced Friday that his whole family has tested positive for COVID-19 , following the diagnosis of his 4-year-old daughter last weekend.

My 5 year old son, my wife Alice, and I have all tested positive for COVID-19, Murthy said in a series of tweets Friday. Our son has a runny nose and low grade fever but is otherwise eating, drinking, playing with his sister, and watching his favorite cartoons.

Murthy, his wife, and son are all vaccinated and experiencing minor symptoms, he said. His daughter, who tested positive first, is too young for the vaccine. Murthy said shes experienced fevers and a sore throat in addition to congestion and lots of coughing, but is starting to improve.

When youve been as safe as you can, getting COVID-19 can be frustrating and disappointing, Murthy said. Ive felt that. It can also be a source of shame. Many people assume you must have been careless to get sick. Our safety measures reduce risk but they cant eliminate risk. Nothing can.

So if youve done everything you can and gotten COVID-19 anyway, dont beat yourself up. A lot of us are doing the best we can. And lets not assume those who get sick are careless. We dont know peoples circumstances. They may not be able to protect themselves the way we can.

Murthy closed with a message of unity and optimism, reminding Americans that, despite feeling like were in an endless conflict, we all share similar hopes and concerns:

Whether youve had COVID or not, whatever your beliefs may be, I wish for you the love of family & friends. I know it feels like were in endless conflict. But we are brothers and sisters first with common hopes and common concerns. May we all find healing in the days ahead.