ResApp Health Limited announced that it has completed recruitment in its US-based SARS-CoV2 ("COVID-19") clinical study, COVID-Cough. The study has now collected audio cough recordings and self-reported symptoms for 122 polymerase chain reaction (PCR) confirmed COVID-19 positive cases and 139 PCR confirmed COVID-19 negative cases. The US-based COVID-Cough pilot clinical study (clinicaltrials.gov: NCT04864535) aims to collect data to train an algorithm to identify COVID-19 through cough sounds recorded on a smartphone, using a gold standard PCR pathology test as a reference standard.