Local Survey Proposal

3 weeks ago

How many #COVID19 cases China had in January 2023? How many deaths? We will possibly never know exactly, but we estimate them in this preprint.Method: We ran an indirect survey in Chinese and collected 1000 responses. After carefully filtering then, we applied the Network Scale-up method #NSUM to obtain the estimates.Results: We estimate 78.57% (77.62%-79.54%) of the population infected in the last month. Deaths and hospitalization in the last month estimates are 1.19% and 9.30%, respectively, which are possibly high due to some bias. ... See MoreSee Less

A Snapshot of COVID-19 Incidence, Hospitalizations, and Mortality from Indirect Survey Data in China in January 2023

www.medrxiv.org

In this work we estimate the incidence of COVID-19 in China using online indirect surveys (which preserve the privacy of the participants). The indirect surveys deployed collect data on the incidence ...

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CoronaSurveys

2 months ago

Our article "Using survey data to estimate the impact of the omicron variant on vaccine efficacy against COVID-19 infection" is in Nature Scientific Reports. We use data from the UMD Global COVID-19 Trends and Impact Surveys to show that the protection of vaccination with one or two doses against COVID-19 infection with Omicron (subvariant BA.1) is much lower than with Delta."For instance, the efficacy drops from 0.81 to 0.30 for those vaccinated with 2 doses (of Pfizer/BioNTech), and from 0.51 to 0.09 for those vaccinated with one dose (of Pfizer/BioNTech or Johnson & Johnson)." (in South Africa)All the data we can share and the scripts are freely available.www.nature.com/articles/s41598-023-27951-3 ... See MoreSee Less

Using survey data to estimate the impact of the omicron variant on vaccine efficacy against COVID-19 infection - Scientific Reports

www.nature.com

Symptoms-based detection of SARS-CoV-2 infection is not a substitute for precise diagnostic tests but can provide insight into the likely level of infection in a given population. This study uses symp...

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CoronaSurveys

3 months ago

COVID in China, the U.S., and everything in-between yourlocalepidemiologist.substack.com/p/covid-in-china-the-us-and-everything?utm_source=substack&p... ... See MoreSee Less

COVID in China, the U.S., and everything in-between

yourlocalepidemiologist.substack.com

Well, I was very much enjoying my holiday but COVID continues to do its COVID thing. It’s time for an update. China: A humanitarian disaster As expected, the COVID-19 situation in China is out of ha...

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CoronaSurveys

3 months ago

Please help us track the situation in China. Ask any of your contacts there to fill out the survey survey.coronasurveys.org/CN ... See MoreSee Less

Global Coronasurveys Survey

survey.coronasurveys.org

The 1 minute Coronavirus survey by coronasurveys.org, a not-for-profit independent organisation. We do not collect any personal information or data.

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CoronaSurveys

5 months ago

Trends are showing an increase in active #COVID19 cases. We are still collecting your responses in the CoronaSurveys poll. Please, participate and share! survey.coronasurveys.org/ ... See MoreSee Less

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Gold Bee

Donate to Coronasurveys- Select USC Symptom Data Challenge Fund to make a donation

The funds collected will be used to promote survey participation in countries where the official data of COVID-19 cases is unavailable, insufficient, or inconsistent.

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