a familial cluster of infection associated with the 2019 novel coronavirus indicating potential person-to-person transmission during the incubation period
a familial cluster of infection associated with the 2019 novel coronavirus indicating potential person-to-person transmission during the incubation period
the epidemiological evidence has shown possible transmission of 2019 novel coronavirus during the incubation period.", "a familial cluster of pneumonia associated with the 2019 novel coronavirus indicating person-to-person transmission: a study of a family cluster.")