Saturday, November 27, 2021

Kansas COVID-19 Update, Week 70

coronavirus

Not a lot of good news this week. New cases still going up. Hospitalizations too. There was also a one-day spike in deaths on Nov. 19, though that's not enough to establish a trend. This seems to be the winter surge. Last year our new cases peaked right around this time, at a rate more than twice as high, leading to extreme death in December and January. I think it would be naive to believe the peak will come at precisely the same time this year. We may be there, we may not be. 

The Good: The infection reproduction rate, Rt, remained at 1.0 this week. We aren't testing near enough to be confident in that exact number (the website I use gives us a range of anywhere from 0.83 to 1.5), but if that's right, it's good news because it means infections aren't increasing. But they're not decreasing either.

The Bad: COVID hospitalizations statewide jumped from 443 to 478, according to the Kansas Hospital Association. Cases in ICU are up from 114 to 144. Wichita's hospitals saw a steep rise in cases this week, from 97 to 135. Cases in ICU there dropped from 51 to 50, but given the overall hospitalization numbers, it's only a matter of time before those are back on the rise. Kansas City area hospitals had 342 COVID patients this week, including 88 in ICU. ICU availability remained at 20% there, though. 

The Ugly: Test positivity rose from 37.6% to 42.4%, according to Johns Hopkins. That's second-worst in the country behind Iowa. Kansas is also basically tied with Idaho for lowest per-capita testing rate. Vermont is testing 20 times more than Kansas. 

Bonus: About 600 passengers on two planes traveling from South Africa to Amsterdam were stopped upon arrival and tested for COVID, because of the new Omicron variant. Sixty-one tested positive, though it's still unknown exactly how many had the Omicron variety. This will be something to keep an eye on.  

Saturday, November 20, 2021

Kansas COVID-19 Update, Week 69

coronavirus

It looks like the beginning of the winter surge is upon us. New cases are up, and hospitalizations are up too. For now, deaths still seem to be trending down from September/October levels, but deaths are of course a lagging indicator. This year's winter surge is not likely to be as bad as last year's, especially in terms of hospitalizations and deaths, because of the vaccines. But this year we also seem to have more people in hospital beds for non-COVID reasons. So, a friendly reminder: you can get your annual flu shot and a COVID booster at the same time.  

The Good: The infection reproduction rate, Rt, rose from 0.96 to 1.0 in Kansas this week. That qualifies as good news this week because the rest of the news is worse and also because, if you read last week's blog, you know that I wasn't super confident in that 0.96 figure anyway. In fact, given our lack of testing, I'm guessing 1.0 might be artificially low too. 

The Bad: COVID hospitalizations statewide rose from 393 to 443, according to the Kansas Hospital Association. Of those, 114 are in ICU. Hospitalizations in the Wichita area fell from 102 to 97, but the number of cases in ICU remained at 51.  ICU availability in KC area hospitals fell from 18% to 17%. 

The Ugly: Test positivity rose from 37% to 37.6%, according to Johns Hopkins. That's still fourth-worst in the country behind Iowa, Oklahoma and Idaho. And Kansas is still running the fifth-least tests per capita in the U.S. One caveat: these numbers, for the most part, don't include at-home tests. The news this week that Lee Norman is stepping down as KDHE secretary spurred me to go back and listen to an interview he did for the Kansas Reflector podcast in May. In it he predicted that the rise in at-home tests would skew test positivity numbers because negative at-home test results are almost never going to be reported, while most positive results probably will be eventually (when a patient gets a PCR test to confirm the positive). I can confirm that this has happened in my house. My wife and I have run several at-home tests, they've all been negative, and those negatives weren't figured into any official test positivity data. That could be playing a role in keeping Kansas' test positivity stubbornly high, especially if Kansans are relying on at-home tests more than residents of other states. 

Bonus: Throughout the pandemic I have found Eric Topol's Twitter feed to be invaluable. He's a physician-researcher with a "just the facts" style who does a really good job of spotlighting important, reliable studies and then putting their results in context. This week he spotlighted the first randomized, controlled trial to show the effect of COVID boosters. All 10,000 participants in the study had gotten two doses of the Pfizer vaccine earlier this year. One group was given a real booster, and the control group was given a placebo "booster." Both groups were then watched for two months. The results were striking: the group that got the actual booster saw their protection against symptomatic infection rise to 95% within seven days. And the best part? There were actually more adverse events reported by the placebo group than by the group that got the actual booster, suggesting it's extremely safe. Now, the people in the placebo group remained well-protected against severe illness from their first two shots — none were hospitalized for COVID and only two suffered a "severe" case (determined by an oxygen saturation level of 93% or below). But they were more likely to get an infection (which can still be pretty crummy, if not life-threatening) and therefore more likely to pass the virus along to others. Boosters are now open to all adults, and the data shows they can really help our communities stem the spread.     

Saturday, November 13, 2021

Kansas COVID-19 Update, Week 68

coronavirus

The general pattern of the past month continues to hold. New cases remain high in Kansas, but not as high as they were in August or September, and they're not really increasing or decreasing much at all. I hope this is not the new normal. We're still averaging about 20 COVID deaths per week as a state, which would be more than 1,000 a year. While that's certainly a lot better than the first 12 months of the pandemic, when we suffered about four or five times that many deaths, it still seems like a pretty high price to pay. Hopefully vaccines for kids 5-11 will help reduce transmission.

The Good: The infection reproduction rate, Rt, fell from 1.0 to 0.96 this week.  The caveat to that is that getting a really precise Rt number relies on having robust testing in place, and there's ample evidence we aren't testing near enough in Kansas. 

The Bad: COVID hospitalizations statewide barely budged this week, going from 402 to 393, according to the Kansas Hospital Association. Cases in Wichita's hospitals fell from 113 to 102, but cases in ICU there actually rose from 48 to 51 and those hospitals remain over their normal ICU capacity. ICU capacity in the Kansas City area is also slightly more pinched, going from 22.5% to 18% this week. 

The Ugly: Test positivity rose from 33% to 37% this week, according to Johns Hopkins. That's third-worst in the nation behind Iowa and Idaho. Only five states are currently running fewer weekly tests per capita than Kansas. Four states (Vermont, Massachusetts, Rhode Island and Illinois) are each running at least 10 times more. That's why I can't be super confident about that Rt dip. 

Bonus: Children are at lower risk for severe COVID-19 than adults, but sadly some do get very ill from it, and some even die. We have seen it happen right here in Kansas, including again this week, with our sixth pediatric death of the pandemic. It's important to know that the new vaccine approved for kids 5-11 is a lower dose specially formulated for that age group. In clinical trials it provided robust protection (because kids that age have very responsive immune systems) without any evidence of the rare side effects (myocarditis) observed in some (mostly young men) who received the adult dosage. In fact, so far no serious side effects of any kind have been observed in the trial participants. It's a smaller sample size than the clinical trials for the adult vaccine, but so far the kids' dose looks extremely safe and effective.     

Saturday, November 6, 2021

Kansas COVID-19 Update, Week 67

coronavirus

We continue to be in sort of a holding pattern in terms of new cases. After a steady decline through the month of September, we've been at essentially the same rate for more than a month. That rate is nowhere near last year's November/December surge, or even this summer's Delta surge, but it's still pretty high: about 1,000 new cases per day, in a state of 3 million people. That's far too many for us to trace and isolate, like we would with infectious diseases like measles. But the good news is that hospitalizations continue to fall, and a new drug that should keep more COVID patients out of hospital beds is on the way.  

The Good: Total COVID hospitalizations statewide fell from 454 to 402 this week, according to the Kansas Hospital Association. That's much better than the week before, when the number barely moved. Sedgwick County's ICUs remain over normal capacity, but their COVID hospitalizations fell from 133 to 113 this week. Unfortunately, cases in ICU only dropped from 50 to 48. ICU availability in the Kansas City metro rose from 20% to about 22.5% this week. Not a huge jump, but it's the right direction.

The Bad: The infection reproduction rate, Rt, once again stayed the same at 1.0. That tracks with our steady case rates. New cases won't fall until we get Rt below 1.

The Ugly: Test positivity stayed basically the same, going from 33.2% to 33.0%, according to Johns Hopkins. Still fourth-worst in the country behind Idaho, Iowa and Oklahoma. With Rt hovering right at 1.0, it would be nice if we could be more confident that we're testing enough to catch most infections. But we're not. 

Bonus: Colorado continues to feel a major hospital bed crunch, with only about 100 ICU beds available across the entire state (a population of almost 6 million, and more if you include all of the people who live in rural parts of surrounding states like Kansas and rely on places like Denver and Grand Junction for ICU care). COVID-19 is not the only thing driving the bed space shortage there, but it's definitely a factor. And it should be much less of one. About 35% of Coloradoans (the unvaccinated) currently account for about 80% of all COVID hospitalizations. Which suggests you have a much, much lower risk of hospitalization if you've been vaccinated. It's the same story all over. In the country of Luxembourg, the 30% of the population that's unvaccinated accounts for 82% of COVID hospitalizations. In Sedgwick County, the 37% of the population that's unvaccinated accounts for 88% of COVID hospitalizations. We have the tools to solve this problem. We just need to convince more people to use them.