We do not yet know the answer to this. It is possible that people with ACHD will have the same symptoms as people in the community, meaning that 80% of people will have a very mild and self-limiting illness, and 20% of people will be sicker than this and may require an inpatient hospital admission.
We are concerned about evidence suggesting that COVID-19 may have a more significant impact in patients with cardiovascular comorbidities, however there is no data specific to people with ACHD. Most of the affected patients are older, have hypertension and acquired heart disease—not congenital heart disease.
To date, anecdotal reports suggest there is no significant increase in severity of COVID-19 for patients with ACHD.