<commit_before>---
title: COVID Symptom Survey
has_children: true
nav_order: 2
---

# COVID Symptom Survey

Delphi conducts a voluntary COVID-19 symptom survey, distributed daily via a
partnership with Facebook. This survey asks respondents about COVID-like
symptoms, their behavior (such as social distancing), mental health, and
economic and health impacts they have experienced as a result of the pandemic. A
high-level overview of the survey is posted [on the COVIDcast
website](https://covidcast.cmu.edu/survey.html).

Aggregate data from this survey is available through the [COVIDcast API](../api/covidcast.md)
as the [`fb-survey` data source](../api/covidcast-signals/fb-murvey.md).
<commit_msg>Fix link typo<commit_after>---
title: COVID Symptom Survey
has_children: true
nav_order: 2
---

# COVID Symptom Survey

Delphi conducts a voluntary COVID-19 symptom survey, distributed daily via a
partnership with Facebook. This survey asks respondents about COVID-like
symptoms, their behavior (such as social distancing), mental health, and
economic and health impacts they have experienced as a result of the pandemic. A
high-level overview of the survey is posted [on the COVIDcast
website](https://covidcast.cmu.edu/survey.html).

Aggregate data from this survey is available through the [COVIDcast API](../api/covidcast.md)
as the [`fb-survey` data source](../api/covidcast-signals/fb-survey.md).

{'fraction_non_alphanumeric': 0.08677098150782361, 'fraction_numerical': 0.004267425320056899, 'mean_word_length': 4.742857142857143, 'pattern_counts': {'":': 0, '<': 3, '<?xml version=': 0, '>': 3, 'https://': 2, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 2, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
{'dir': 'git-commits-cleaned', 'id': '1526312', 'n_tokens_mistral': 411, 'n_tokens_neox': 393, 'n_words': 168}