B.1.1.7 not associated with change in serial interval of COVID-19
With data obtained from the Virus Watch study in England and Wales, researchers found that the serial interval of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is broadly similar to estimates from previous studies and there is no evidence that the B.1.1.7 variant is associated with any change.
Serial interval is a key parameter in epidemiological studies of infectious diseases. It is an estimation of the spread of the disease and is often measured as the time interval between symptom onset in a primary case and the onset of symptoms in the secondary cases infected by the primary case. Serial interval is an important parameter used in disease transmission models and can help guide control strategies.