US Coronavirus Cases Rise in Nearly Half of States.23 states have reported spikes in new cases compared to the previous week, according to Johns Hopkins University.Among the states experiencing record-breaking single-day increases are California and Florida.Officials say that more young people are testing positive in the South, with those under 30 making up the majority of new cases.Some have suggested that the increase is a result of more testing, but health officials say that’s only partly to

Alabama, Mississippi report highest coronavirus totals for day

Two Southern states reported their highest daily totals of confirmed coronavirus cases Thursday. 

Alabama confirmed 1,129 new cases, while Mississippi reported 1,092 new cases. On Wednesday, Florida reported its highest daily total of 5,508 cases.

Alabama now has 32,753 cases, while Mississippi is reporting 24,516. On Thursday, Florida’s total stood at 114,018 cases, counting Thursday’s new single-day total of 5,004.

»COMPLETE COVERAGE: CORONAVIRUS

U.S. officials believe as many as 20 million Americans have contracted the coronavirus, suggesting millions had the virus and never knew it.

More Young Adults Are Getting COVID-19 in Hard-Hit States.According to NBC News, more adults in their 20s, 30s and 40s are testing positive for coronavirus, especially in states that are seeing spikes in new cases.Experts attribute the increase to a variety of things, including more testing, but large gatherings are at the top of the list.I've seen bars and restaurants that look like it's New Year's Eve 1999, not a care in the world, nobody wearing masks, standing shoulder to shoulder, Dr. James M

Twenty million infections would mean about 6% of the nation’s 331 million people have been infected, leaving most of the population still susceptible to the virus. 

Previously, officials at the Atlanta-based Centers for Disease Control and Prevention and the nation’s top infectious disease expert, Dr. Anthony Fauci, have said that as many as 25% of infected people might not have symptoms.

»MORE: S.C. beaches fill, but COVID-19 isn’t on vacation

The new estimate is based on CDC studies of blood samples collected nationwide. Many infections were not caught in early testing, when supplies were limited and federal officials prioritized testing for those with symptoms.

Dr. Thomas Tsai, a Harvard University health policy researcher, said 20 million seems reasonable, but “most of these estimates exist in a range” and it’s important to know how wide that is.

CDC Develops Single Test for COVID-19 and Both Flu Strains.According to CNN, CDC director Dr. Robert Redfield is scheduled to testify Tuesday at a House coronavirus oversight hearing.Redfield says the agency "has developed a new laboratory test that checks for three viruses at the same time, two types of influenza viruses (A and B) and SARS-CoV-2, the virus that causes COVID-19."....testing for all three viruses simultaneously will allow public health laboratories to continue surveillance for in

“It’s hard to interpret this just from a single number and without the context for it,” such as what locations were sampled and whether it was truly a random slice of a population or areas of low or high prevalence, which can skew the results.

A dozen states in recent weeks have seen a worrisome uptick in new cases, as well as in the more critical measure of the percentage of positive cases discovered in tests performed. Seven states have seen more than 10% of tests come back positive. And troublesome spikes in Sun Belt states have dominated news coverage in recent days.

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As states reopen, the Trump administration says it is up to governors and local officials to determine how to respond to the spikes. Texas GOP Gov. Greg Abbott, for example, recommended that most residents remain home for their safety, as his state sees virus infections increasing in major metro areas.

The CDC teams, officials said, are working to trace new outbreaks and reinforce protective measures such as social distancing and mask wearing in hard-hit areas and to remind vulnerable populations to take extreme precautions. The administration says those efforts have helped slow new infections in North Carolina and Alabama, where they were deployed earlier this month.

The officials say the nature of the outbreak now is different than months ago, when deaths topped more than 1,000 per day for weeks and hospitals were stretched beyond capacity across the country. The new increase in positive cases, they said, is capturing what has long been there. They say it is only now showing up in data because the U.S. has increased testing and surveillance.

Florida Could Become the Next COVID-19 Epicenter, Model Shows.A team of scientists at Children’s Hospital of Philadelphia and the University of Pennsylvania say the state has “all the markings of the next large epicenter.”.CNN reported the team also added that the state is at risk of being the “worst it has ever been.”.Florida recorded its highest single day jump in coronavirus infections on Monday, with nearly 2,800 new cases.The state has tallied 82,719 total COVID-19 cases and 3,018 dea

With testing far more widespread now, officials believe 50% of new cases in Florida and Texas are among people ages 35 or younger, and most of them are asymptomatic.

The U.S. is testing about 500,000 patients per day. On a per capita basis, the U.S. rate falls behind several other countries, including Spain, Australia, Russia and Iceland, according to figures from Johns Hopkins University.

The Associated Press contributed to this report.

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