Add Swiss long-term follow-up study

Finds 39% still had symptoms, although only 65% or so of patients didn't drop out
ljl-covid · Aug 7, 2021 · 9b14685 · 9b14685
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@@ -458,6 +458,7 @@ This section includes information about so-called "long COVID".
 * [Evolution of antibody immunity to SARS-CoV-2](https://www.nature.com/articles/s41586-021-03207-w) finds that in a cohort of 87 patients 10% of which needed hospital care, 44% reported long-term symptoms after 6 months, and it also suggests that there may still be replicating virus in the intestine (gut) of about half of infected individuals at least 90 days after infection (see also [this tweet](https://twitter.com/profshanecrotty/status/1365107289011539970) commenting about that)
 * [Persistent Symptoms in Patients After Acute COVID-19](https://jamanetwork.com/journals/jama/fullarticle/2768351), an Italian study on patients that were hospitalized, after around 60 days
 * [The prevalence of long COVID symptoms and COVID-19 complications](https://www.ons.gov.uk/news/statementsandletters/theprevalenceoflongcovidsymptomsandcovid19complications), by the British [Office for National Statistics](https://www.ons.gov.uk/), has plans for estimating the prevalence of, and risk factors for, "long COVID" symptoms and health complications following coronavirus (COVID-19) infection, and early data
+* [Prevalence of Symptoms More Than Seven Months After Diagnosis of Symptomatic COVID-19 in an Outpatient Setting](https://www.acpjournals.org/doi/10.7326/M21-0878) reports on a survey of non-hospitalized patients at Geneva University Hospitals under the CoviCare follow-up program, finding that 39% still reported some symptoms after 7 to 9 months, mainly fatigue, loss of smell, or taste, dyspnea and headache
 * [Outcomes of Cardiovascular Magnetic Resonance Imaging in Patients Recently Recovered From Coronavirus Disease 2019 (COVID-19)](https://jamanetwork.com/journals/jamacardiology/fullarticle/2768916), a study on 100 "unselected" patients in Germany (median age 49), finds that 78% had cardiac involved, and 60% ongoing myocardial inflammation
 * [As Their Numbers Grow, COVID-19 “Long Haulers” Stump Experts](https://jamanetwork.com/journals/jama/fullarticle/2771111) with a few examples of studies showing a large proportion of cases suffer long-term symptoms, most often cough but also frequently more complex and reminescent of [ME/CFS](https://en.wikipedia.org/wiki/Chronic_fatigue_syndrome)
 * [BNONews COVID-19 reinfection tracker](https://bnonews.com/index.php/2020/08/covid-19-reinfection-tracker/) keeps track of patients who likely had COVID-19 more than once, with their location, age, sex, interval before re-infection, severity of both cases, and a link to more details