Coronavirus Watch: Cases spread to more than 30 states

The stock market has taken a nosedive. Two U.S. lawmakers have self-quarantined. And there are now more than 600 confirmed cases of COVID-19 across more than 30 states in the U.S.

It's Monday, and this is the start of week 2 of Coronavirus Watch from the Paste BN Network, where we'll keep you updated on COVID-19's global and national impact. Know someone who should stay updated? Please forward this email so they can sign up here.

Welcome to our many new subscribers! Here's how this newsletter works: Up top, we'll provide you with the crucial COVID-19 news to know. Scroll down and you'll find the day's most important articles — from the latest safety recommendations to urgent travel updates.

Here's the latest, as of 3 p.m. ET:

• The Dow Jones Industrial Average plunged almost 2,000 points, or more than 7%, when the market opened Monday and a "circuit breaker" kicked in, halting trading. Subscribe to The Daily Money newsletter to keep up.
• The U.S. total has risen to more than 600 confirmed cases across more than 30 states and the District of Columbia, and the death toll has risen to 22. The global death toll is nearing 4,000. See a map of where the coronavirus has spread. 
• Oregon joined New York, California, Florida, Maryland and Washington in declaring a state of emergency in the state.
• Sen. Ted Cruz and Rep. Paul Gosar on Sunday were in self-quarantine after interacting with a person at a conservative conference who has tested positive for the coronavirus.
• Schools are making the call to cancel classes – or bring them online. A Sacramento County, California, school district canceled class for a week for 64,000 students after a family was quarantined. Meanwhile, Princeton University said its classes will be entirely online after spring break.
• The Grand Princess cruise, which has been floating off California for days, is scheduled to dock Monday at the Port of Oakland at noon local time. Another cruise ship is being kept off the coast of Florida pending coronavirus tests for the crew.
• The State Department is warning against cruise travel: "U.S. citizens, particularly travelers with underlying health conditions, should not travel by cruise ship," the State Department wrote.

Please continue to submit questions. We're figuring out the best way to address as many as possible. In the meantime, here's an explainer that answers many of these questions. What else would you like to know?

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Here are today's coronavirus need-to-knows.

– Lindsay Deutsch, Newsletter Strategist, @lindsdee