The Charleston Tri-county area鈥檚 weekly COVID case rate just shot up another 25%, going from about 5,600 cases to almost 7,000 鈥斕齛 new pandemic high.

鈥淚t's a big number. It's growing fast. The slope is steep,鈥� said , leader of the COVID-19 tracking team at the 石榴视频黄色版.

The slope is the rate at which the case number is rising, which you can see in the graph below. The weekly average is now 124 cases per day for every 100,000 people in Berkeley, Charleston and Dorchester counties combined. That鈥檚 up from 100 last week and 81 the week before.

And unfortunately, that slope may keep going up a little longer, Sweat said. 鈥淭he big question is when will this peak?"

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For now, he鈥檚 sticking with his prediction that it鈥檒l happen fairly soon. 鈥淭he evidence, based on other states that saw the kind of case rate we鈥檙e having, suggests we may be getting close to a max. I've been watching other places that have had big surges 鈥斕齃ouisiana, Florida, Texas. I see this pattern. It seems like it's eight to 12 weeks. It goes up fast and then down relatively quickly.鈥�

We could see our numbers start to go down at the state level when we hit between 120 and 200 cases per 100,000 people, Sweat said. 鈥淪ome states, Arkansas and Missouri, hit peaks earlier than that. But when I get into the data and start looking county by county in these states, most of the counties go between 120 and 200 and then they drop.鈥�

And states that haven鈥檛 dealt with surges yet may be next. Sweat said the virus spreads geographically. 鈥淚t's our turn right now. I would say Tennessee and Kentucky and West Virginia and Indiana are next on the list.鈥�

If they are about to see COVID surges, they, like South Carolina will be dealing with a new variable. 鈥淥ne big uncertainty is that most of the earlier epidemics occurred during the middle of the summer. But here, schools have opened during our surge.鈥�

Kids in those schools under the age of 12 aren鈥檛 eligible to get vaccinated yet. Enough are testing positive for COVID in the Tri-county area that an increasing number of schools are temporarily going online.

鈥淒elta is just really transmissible,鈥� Sweat said.听

But the fact that it鈥檚 infecting so many people, combined with the increasing number of vaccinations, could eventually do Delta in. 鈥淭here will be increasing immunity. There's just got to be a brake, like the brake on the car at some point, to slow this down.鈥�

Sweat and the rest of the MUSC COVID-19 Epidemiology Intelligence Project team have been working since early in the pandemic to analyze trends, offer predictions to help health care and government leaders make good decisions and inform the public.听

Sweat is a professor in the College of Medicine at MUSC and affiliated with the Johns Hopkins Bloomberg School of Public Health. He has a doctorate in medical sociology from Emory University and his experience includes time working with the Centers for Disease Control and Prevention as a research scientist.

He drew on that expertise to raise another pandemic point that could keep the COVID tracking team busy. 鈥淣obody's thinking much about winter, but I still think we have a real potential for another surge in the winter. Last year鈥檚 was worse than that year鈥檚 summer surge.鈥�