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Health officials warn that Washington is experiencing the state's largest tuberculosis outbreak in 20 years. And it's part of a concerning surge in TB cases worldwide.

A Washington State Department of Health release from Thursday shared that state and local health officials are on "heightened alert" due to the current rise in TB cases.

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BA.2 infections aren’t as mild as once thought and even newer versions of Omicron are circulating and spreading fast

After a brief two-month plateau, COVID-19 cases are rising again in the United States, propelled by the Omicron BA.2 subvariant and its more transmissible descendants. The uptick has experts worried, as more people are shedding their masks and returning to pre-pandemic activities.

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Arguably the most successful version of the Omicron coronavirus variant to date has been BA.2 -- but it hasn't been resting on its laurels.

BA.2 has been picking up mutations, sometimes shifting into sleeker and, incredibly, even faster versions of itself.

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It's not just COVID: There's a growing awareness that poor air quality is behind all sorts of maladies.

Emily Krieger bought her air filter about five years ago in order to fend off her allergies. The unit, roughly the size of a surround-sound speaker, ran every night. Soon she found she was sleeping better. Then, when wildfire smoke became an even more regular occurrence in the outdoor skies above her Seattle home, she ran the machine to clear the air inside of any smoke that managed to pass through gaps near windows and doors.

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House Speaker Nancy Pelosi, second in line to the presidency, became the latest top official this week to test positive, following two key Cabinet officials and members of Congress.

WASHINGTON — A fresh wave of Covid-19 cases swept through the nation's capital this week, striking officials at the highest levels of government and disrupting business just as President Joe Biden and other political leaders are urging a return to normalcy.

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Top U.S. Food and Drug Administration officials on Wednesday said the agency is aiming to decide by June whether to change the design of COVID-19 vaccines in order to combat future variants, even if it does not have all the necessary information to measure their effectiveness.

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As Covid restrictions are lifted, people are gathering more, which could be behind an uptick in stomach bugs.

As Covid-19 cases continue to fall in the United States, cases of another virus are rebounding to pre-pandemic levels.

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Coronavirus infections in Asia passed 100 million on Wednesday, according to a Reuters tally, as the region records a resurgence in cases, dominated by the BA.2 Omicron sub-variant.

The region is reporting over 1 million new COVID-19 cases about every two days, according to a Reuters analysis. With more than half of the world's population, Asia contributes 21% of all reported COVID-19 cases.

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It hasn’t even been a month since New York City rolled back its vaccine requirements and ended mask mandates, but cases of COVID-19 are already back on the rise—thanks to the BA.2 Omicron subvariant that’s making its way through the city right now.

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Another subvariant of omicron, BA.1, made up approximately 66% of all cases in the U.S.

The subvariant omicron BA.2 has health officials’ attention, just as COVID restrictions have eased up. It has been classified as a "variant of concern," according to the Centers for Disease Control and Prevention (CDC) and the World Health Organization (WHO). This variant is also called "stealth" omicron because its genetic mutations could make it difficult to distinguish from the delta variant using PCR tests as compared to the original version of omicron, according to the American Medical Association.

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