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TB, Malaria and H.I.V. are spreading amid the coronavirus pandemic

It begins with a mild fever and malaise, followed by a painful cough and shortness of breath. The infection prospers in crowds, spreading to people in close reach. Containing an outbreak requires contact tracing, as well as isolation and treatment of the sick for weeks or months.

This insidious disease has touched every part of the globe. It is tuberculosis, the biggest infectious-disease killer worldwide, claiming 1.5 million lives each year.

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International overview

NEW DELHI (AP) — India reported nearly 55,000 new coronavirus cases Sunday and the Philippines recorded another daily high to surpass 100,000 total infections, while Florida braced for a tropical storm that threatened to hamper anti-disease efforts.

A curfew was imposed on Australia’s second-largest city, Melbourne, following a spike in infections.

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Understanding the mechanism of virus transmission

By Dr. Gavin Macgregor-Skinner | July 29, 2020

As an epidemiologist or “disease detective,” a question I am frequently asked regarding SARS-CoV-2 (the virus that causes COVID-19 disease) is: “How does someone become infected?”

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Hoping to Understand the Virus, Everyone Is Parsing a Mountain of Data

 

CHICAGO — The latest count of new coronavirus cases was jarring: Some 1,500 virus cases were identified three consecutive days last week in Illinois, and fears of a resurgence in the state even led the mayor of Chicago to shut down bars all over town on Friday.

But at the same moment, there were other, hopeful data points that seemed to tell a different story entirely. Deaths from the virus statewide are one-tenth what they were at their peak in May. And the positivity rate of new coronavirus tests in Illinois is about half that of neighboring states.

“There are so many numbers flying around,” said Dr. Allison Arwady, the commissioner of the Chicago health department. “It’s hard for people to know what’s the most important thing to follow.”...

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