Hello,
Welcome to Insider Healthcare. I'm Lydia Ramsey Pflanzer, and today in healthcare news:
- A change in strategy from the CDC could make it hard to know how dangerous Delta is;
- What we know about mixing COVID-19 vaccines;
- The Delta variant makes up 96% of new cases in Missouri.
If you're new to this newsletter, sign up here. Comments, tips? Email me at [email protected] or tweet @lydiaramsey125. Let's get to it…
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A nurse administers a COVID-19 test at a testing site in Suffolk County, New York, on December 18, 2020.
John Paraskevas/Newsday via Getty Images
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John Paraskevas/Newsday via Getty Images
The CDC stopped tracking most COVID-19 cases in vaccinated people. That makes it hard to know how dangerous Delta really is.
- The CDC stopped monitoring non-severe COVID-19 cases among vaccinated people in May.
- It's hard to assess Delta's risk without knowing what mild breakthrough cases look like – or whether they're becoming more common.
- Vaccines still seem highly effective against the variant, though.
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Jakub Porzycki/NurPhoto via Getty Images
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Some experts say J&J vaccine recipients should get an mRNA booster. Here's what we know about mixing shots.
- Some people who got the J&J vaccine are seeking mRNA booster shots.
- The CDC and FDA don't recommend mixing vaccines, but some experts say it can't hurt.
- Early data on mixing vaccines suggests it could trigger a stronger immune response.

Spc. Demetrie Barnett of the Nevada National Guard administers a COVID-19 test.
Ethan Miller/Getty Images

Ethan Miller/Getty Images
The Delta variant is causing more than 80% of new COVID-19 infections in 4 US states, including 96% of new cases in Missouri
- The Delta coronavirus variant is causing more than 80% of new COVID-19 cases in four US states.
- Kansas, Arkansas, Missouri, and Connecticut have the highest proportion of Delta cases, Scripps Research data shows.
- In Missouri, the highly infectious Delta is causing more than 96% of new cases, the data shows.
More stories we're reading:
- The 12 top bankers in the hottest part of healthcare reveal their predictions for the future of the industry (Insider)
- A new surprise billing law could increase tensions between providers and patients (Axios)
- The 9 biotech upstarts that are taking new approaches to brain science as they vie to revive a $30 billion market (Insider)
- Advocates are pushing for better home-based care (US News & World Report)
- Lydia
Read the original article on Business Insider