Covid-19 Breakthrough Hospitalizations Concentrated Among Most Vulnerable

Link:https://www.wsj.com/articles/covid-19-breakthrough-hospitalizations-concentrated-among-most-vulnerable-11637499602

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Excerpt:

At the Medical University of South Carolina, nearly all fully vaccinated Covid-19 patients in the ICU have weak immune systems from prior health problems, said Andrew Goodwin, the section chief of critical care. The rest are elderly, which can also compromise the body’s defense against illness.

Truveta Inc., a firm that aggregates hospitals’ medical data for research, found among 1.7 million fully vaccinated people that those with diabetes, chronic lung disease and chronic kidney disease were about twice as likely to be hospitalized for breakthrough cases as vaccinated people without these conditions.

The likelihood of having a breakthrough infection was still low, though confirmed infections were more common for people with these illnesses. About 1.5% of roughly 110,000 people with chronic kidney disease had one, for example. But Truveta found about a quarter of breakthrough patients with chronic kidney disease wound up hospitalized. The likelihood of hospitalizations for people with breakthrough cases but without underlying health problems was about 7.5%.

Breakthrough deaths are hitting older people the hardest, amplifying a well-worn pandemic pattern. Exclusive data the Journal reviewed from the Epic Health Research Network, which analyzes data from the medical-record software company Epic Systems Corp., shows about 80% of breakthrough deaths among the vaccinated are in people ages 65 and older. The data included records for 19.5 million fully vaccinated people. Among all Covid-19 deaths this year, that age group represents closer to 69%, according to the CDC.

Author(s): Jon Kamp, Melanie Evans

Publication Date: 21 Nov 2021

Publication Site: Wall Street Journal

Data Shows Less Alarming Picture of Delta

Link: https://www.nytimes.com/2021/09/07/briefing/risk-breakthrough-infections-delta.html

Excerpt:

How small are the chances of the average vaccinated American contracting Covid? Probably about one in 5,000 per day, and even lower for people who take precautions or live in a highly vaccinated community.

Or maybe one in 10,000

The estimates here are based on statistics from three places that have reported detailed data on Covid infections by vaccination status: Utah; Virginia; and King County, which includes Seattle, in Washington state. All three are consistent with the idea that about one in 5,000 vaccinated Americans have tested positive for Covid each day in recent weeks.

The chances are surely higher in the places with the worst Covid outbreaks, like the Southeast. And in places with many fewer cases — like the Northeast, as well as the Chicago, Los Angeles and San Francisco areas — the chances are lower, probably less than 1 in 10,000. That’s what the Seattle data shows, for example. (These numbers don’t include undiagnosed cases, which are often so mild that people do not notice them and do not pass the virus to anyone else.)

Here’s one way to think about a one-in-10,000 daily chance: It would take more than three months for the combined risk to reach just 1 percent.

Author(s): David Leonhardt

Publication Date: 7 September 2021

Publication Site: NY Times