Hepatitis A virus, produced from an image taken with transmission electron microscopy. Photo: BSIP/Universal Images Group via Getty Images

The Florida Surgeon General declared a public health emergency this week after cases of Hepatitis A, a vaccine-preventable disease, swelled to 2,034, the Miami Herald reports.

What's happening: 56 new cases of Hepatitis A, a communicable disease of the liver, were reported in Florida from July 20 to July 27. Most of the areas affected are in central and western Florida, according to the Herald.

“The best way to prevent Hepatitis A is through vaccination. It is important that we vaccinate as many high-risk individuals as possible in order to achieve herd immunity.”
— Florida Surgeon General Dr. Scott Rivkees, in a statement on Thursday

Context: Only 548 cases were reported in Florida for all of 2018, according to the state's health department. Florida’s outbreak is overlapping with a national influx of cases.

Go deeper: The intensifying national debate over vaccine exemption rules

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Big Tech marshals a right-leaning army of allies for antitrust fight

Illustration: Eniola Odetunde/Axios

As tech's giants prepare to face off with antitrust enforcers this summer, they will draw support from an array of predominantly right-leaning defenders ranging from influential former government officials to well-connected think tanks.

The big picture: The Justice Department, the Federal Trade Commission and the states have multiple investigations of monopolistic behavior underway targeting Facebook and Google, with other giants like Amazon and Apple also facing rising scrutiny. Many observers expect a lawsuit against Google to land this summer.

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Illustration: Sarah Grillo/Axios

Supreme Court Chief Justice John Roberts is not the revolutionary that conservative activists want him to be.

He moves slower than they want, sides with liberals more than they want, and trims his sails in ways they find maddening. But he is still deeply and unmistakably conservative, pulling the law to the right — at his own pace and in his own image.

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Illustration: Aïda Amer/Axios

By letting the coronavirus surge through the population with only minimal social distancing measures in place, the U.S. has accidentally become the world’s largest experiment in herd immunity.

Why it matters: Letting the virus spread while minimizing human loss is doable, in theory. But it requires very strict protections for vulnerable people, almost none of which the U.S. has established.