As an epidemiologist, I spend most of my waking hours interviewing people who are
#COVID19 positive, suspect cases, & close contacts. Here’s some info on the
#symptomatology I’m seeing.
(NB: We’re not yet re-interviewing people post-recovery to capture all late-onset sx.)
1/

https://abs.twimg.com/emoji/v2/... draggable="false" alt="▪️" title="Black small square" aria-label="Emoji: Black small square">
#Onset symptoms are all over the map, & can include diarrhea, nausea, runny nose, congestion...things that don’t immediately make people think
#COVID19 (so STAY HOME with ANY symptoms

https://abs.twimg.com/emoji/v2/... draggable="false" alt="❗️" title="Red exclamation mark symbol" aria-label="Emoji: Red exclamation mark symbol">)

https://abs.twimg.com/emoji/v2/... draggable="false" alt="▪️" title="Black small square" aria-label="Emoji: Black small square">The most common sx at onset is a cough (usually dry), but that’s only half of cases
2/
#Onset symptoms are all over the map, & can include diarrhea, nausea, runny nose, congestion...things that don’t immediately make people think #COVID19 (so STAY HOME with ANY symptomshttps://abs.twimg.com/emoji/v2/... draggable="false" alt="❗️" title="Red exclamation mark symbol" aria-label="Emoji: Red exclamation mark symbol">)https://abs.twimg.com/emoji/v2/... draggable="false" alt="▪️" title="Black small square" aria-label="Emoji: Black small square">The most common sx at onset is a cough (usually dry), but that’s only half of cases2/" title="https://abs.twimg.com/emoji/v2/... draggable="false" alt="▪️" title="Black small square" aria-label="Emoji: Black small square"> #Onset symptoms are all over the map, & can include diarrhea, nausea, runny nose, congestion...things that don’t immediately make people think #COVID19 (so STAY HOME with ANY symptomshttps://abs.twimg.com/emoji/v2/... draggable="false" alt="❗️" title="Red exclamation mark symbol" aria-label="Emoji: Red exclamation mark symbol">)https://abs.twimg.com/emoji/v2/... draggable="false" alt="▪️" title="Black small square" aria-label="Emoji: Black small square">The most common sx at onset is a cough (usually dry), but that’s only half of cases2/" class="img-responsive" style="max-width:100%;"/>

https://abs.twimg.com/emoji/v2/... draggable="false" alt="▪️" title="Black small square" aria-label="Emoji: Black small square">Only a third of cases are reporting fevers within 24h of onset

https://abs.twimg.com/emoji/v2/... draggable="false" alt="▪️" title="Black small square" aria-label="Emoji: Black small square">Headache, fatigue, and/or sore throat at onset are reported in over 20% of cases

https://abs.twimg.com/emoji/v2/... draggable="false" alt="▪️" title="Black small square" aria-label="Emoji: Black small square">Myalgia and/or chills are also not uncommon
3/

https://abs.twimg.com/emoji/v2/... draggable="false" alt="▪️" title="Black small square" aria-label="Emoji: Black small square">Symptoms throughout illness are likewise all over the map

https://abs.twimg.com/emoji/v2/... draggable="false" alt="▪️" title="Black small square" aria-label="Emoji: Black small square">Cough is most common, but still reported in under 90% of cases

https://abs.twimg.com/emoji/v2/... draggable="false" alt="▪️" title="Black small square" aria-label="Emoji: Black small square">Fever is only reported in about 60% of cases

https://abs.twimg.com/emoji/v2/... draggable="false" alt="▪️" title="Black small square" aria-label="Emoji: Black small square">Headache, myalgia, and chills are each more common than actual fever
4/

https://abs.twimg.com/emoji/v2/... draggable="false" alt="▪️" title="Black small square" aria-label="Emoji: Black small square">Over half of cases report shortness of breath (sometimes in absence of cough)

https://abs.twimg.com/emoji/v2/... draggable="false" alt="▪️" title="Black small square" aria-label="Emoji: Black small square">Fatigue is also very common at about 80% of cases

https://abs.twimg.com/emoji/v2/... draggable="false" alt="▪️" title="Black small square" aria-label="Emoji: Black small square">2/3rds of cases report cold-like sx (sore throat, runny nose, and/or congestion) at some point during illness
5/
Confirmation of reports of more surprising sx:

https://abs.twimg.com/emoji/v2/... draggable="false" alt="▪️" title="Black small square" aria-label="Emoji: Black small square">Almost half of cases have GI symptoms, most commonly diarrhea (41%)

https://abs.twimg.com/emoji/v2/... draggable="false" alt="▪️" title="Black small square" aria-label="Emoji: Black small square">Fully half of our cases are reporting sudden loss of taste or smell, often both, unrelated to congestion, & sometimes at onset, even in absence of other sx
6/
TL;DR:

https://abs.twimg.com/emoji/v2/... draggable="false" alt="❗️" title="Red exclamation mark symbol" aria-label="Emoji: Red exclamation mark symbol">Ppl have
#COVID19 *without* fever or cough

https://abs.twimg.com/emoji/v2/... draggable="false" alt="❗️" title="Red exclamation mark symbol" aria-label="Emoji: Red exclamation mark symbol">Fatigue, headache, diarrhea are more common than ppl think

https://abs.twimg.com/emoji/v2/... draggable="false" alt="❗️" title="Red exclamation mark symbol" aria-label="Emoji: Red exclamation mark symbol">Don’t leave home with ANY symptoms, even seemingly benign ones like runny nose

https://abs.twimg.com/emoji/v2/... draggable="false" alt="❗️" title="Red exclamation mark symbol" aria-label="Emoji: Red exclamation mark symbol">Be alert for loss of taste or smell
#COVIDsymptoms #coronasymptoms #anosmia
Tip: mention @twtextapp on a Twitter thread with the keyword “unroll” to get a link to it.