Introducing The Daily Drop-in: Our daily pick of the best tools and articles to help you care for yourself during lockdown.
×

Covid-19 Symptom Mapper Results

Last updated 25 May 2020

Background

Your.MD and Imperial College of Science Technology and Medicine have launched the Covid-19 Symptom Mapper with the aim to collect self-reported population data from people who have either tested positive to Coronavirus or believe to have compatible symptoms but have not been tested.

The objective of the study is to collect enough data from each country to help researchers better understand how the virus affects people who do not require to be hospitalized.

Please note that all the data are anonymised and we intend to make it available to the wider scientific community. If you decide to leave your email for future communications, please note that it is not stored with your data.

Data Set

As of 25 May 2020, 84788 people worldwide have provided data on their Covid-19 symptoms through Your.MD Covid-19 Mapper app, an increase of 5126 respondents in one week. 73.8% of the respondents reported at least 1 symptom. We further excluded people who self-diagnosed as not having Covid-19 unless they experienced fatigue, fever, cough and loss of smell or taste. In our final analysis, the sample size was 31409 (51% men, mean age = 37 (±13).

Key Points

Fatigue, cough and sore throat remained three most common symptoms (57.1%, 52.4% and 52.3% respectively). Those who have been tested positive also reported headache (59.2%), muscle ache (59.8%) and anosmia (55.5%) as common symptoms. Women seemed to experience more chills, headache, muscle ache and loss of smell and taste than men.

Our further analysis of a subgroup of respondents who have been tested for Covid-19 showed that loss of smell or taste is strongly associated with a positive result. This, in fact, was the strongest predictor of whether or not someone was positive with the disease. Those who experienced anosmia were 4.1 times (95% CI: 3.2 - 5.2) more likely to test positive with Covid-19 compared with their counterparts who did not experience this symptom. This supports recent findings of a study led by researchers at King’s College London.

In roughly 56% of the sample, the symptoms lasted for a week or less. Yet, about 12% of the respondents said their symptoms persisted for over 3 weeks. Most people reported mild symptoms. This might be attributable to the fact that the sample mainly consisted of young people under the age of 40 (64%) without underlying health conditions.

Countries with the highest number of people with Covid-19 symptoms recorded in the Mapper were India (22.4%), the Philippines (16.3%), the UK (14.8%), Pakistan (8.9%), Mexico (7.3%), Nicaragua (5.2%) and Nigeria (4.7%).

Results

These results are updated on a regular basis.

Severity

The table below shows the percentage of people that have mild, moderate or severe COVID-19. All data are self-reported

Mild Moderate Severe
84.9% 13.4% 1.4%

Gender

The table below shows the gender split of participants across the top 7 countries.

Country Male Female
India 68.7% 31.3%
Phillipines 50.3% 49.7%
United Kingdom 21.6% 78.4%
Pakistan 68.4% 31.6%
Mexico 46.4% 53.6%
Nigeria 68.0% 32.0%
Nicaragua 41.6% 58.4%

Age

The table below shows the age distribution of participants.

Under 40 40 - 59 60+
64.2% 29.2% 6.6%

Duration of Illness

The table below shows the number of days people reported to be unwell.

Duration Percentage
None 16.0%
1-7 days 55.9%
8-14 days 10.6%
15-21 days 5.1%
22+ days 12.4%

Symptoms

The table below shows the % of users who have reported any of the symptoms from the mapper compared to a study based on hospitalised patients in Wuhan, China.

Symptom % Mapper % Study
Persistent cough 52.4% 68% 
Temperature 23.5% 22% 
Fatigue / Tiredness 57.1% 38% 
Coughing up mucus (sputum) 37.8% 34% 
Shortness of breath 33.7% 19% 
Muscle aches 48.2% 15% 
Sore throat 52.3% 14% 
Headache 46.9% 14% 
Chills 22.0% 12% 
Blocked nose 39.2% 5% 
Vomiting 7% 5% 
Diarrhoea 18.0% 5% 
Loss of smell and taste 21.1% N/A 

Breakdown by category

The section below shows a breakdown of the severity of self diagnosis by age and the percentage breakdown for each symptom by gender and country.

COVID-19 Severity ⓘ
Mild Moderate Severe
Under 40 86.2% 11.9% 1.5%
40-59 82.8% 15.7% 1.3%
60+ 80.2% 18.2% 1.3%
Symptom Male Female
Cough ⓘ 50.1% 49.9%
Temperature ⓘ 55.1% 44.9%
Fatigue ⓘ 48.0% 52.0%
Coughing up mucus (sputum) ⓘ 52.0% 48.0%%
Shortness of breath ⓘ 49.7% 50.3%
Muscle aches ⓘ 46.3% 53.7%
Sore throat ⓘ 50.5% 49.5%
Headache ⓘ 43.8% 56.2%
Chills ⓘ 45.3% 54.7%
Blocked nose ⓘ 52.4% 47.6%
Vomiting ⓘ 44.5% 55.5%
Diarrhoea ⓘ 48.5% 51.6%
Loss of smell and taste ⓘ 44.5% 55.5%
Symptom UK India Philippines
Cough ⓘ 16.5% 19.8% 16.8%
Temperature ⓘ 13.2% 21.5% 8.4%
Fatigue ⓘ 20.0% 17.6% 13.0%
Coughing up mucus (sputum) ⓘ 17.0% 21.1% 16.1%
Shortness of breath ⓘ 20.2% 16.9% 18.9%
Muscle aches ⓘ 19.3% 16.5% 15.2%
Sore throat ⓘ 14.1% 22.5% 15.3%
Headache ⓘ 19.1% 14.5% 13.3%
Chills ⓘ 24.3% 13.4% 9.9%
Blocked nose ⓘ 15.8% 17.1% 13.9%
Vomiting ⓘ 20.0% 17.5% 18.3%
Diarrhoea ⓘ 20.8% 12.2% 14.9%
Loss of smell and taste ⓘ 21.3% 11.6% 9.4%

How to participate in this study

You can help us map the pandemic by clicking on the following link and filling in the survey.

We can share the anonymised data from this research contact partners@your.md.

Stay in touch and help us learn more

Enter your email to stay up to date and help with more coronavirus research.

For the latest information on the coronavirus outbreak, visit our coronavirus hub and sign-up to our Daily Drop-in service to receive valuable tips on how to survive social distancing.

Previous version of statistics from May 18, 2020 can be found here.

Important: Our website provides useful information but is not a substitute for medical advice. You should always seek the advice of your doctor when making decisions about your health.

Try the App
Image of a phone with the Your.MD app
3,000,000 Downloads
Image with a link to download the app for android devices Image with a link to download the app for ios devices
Top