title: Reply to Wang et al.
authors.affiliation: Infection Control, Singapore General Hospital.
authors.forename: Moi Lin
authors.initials: ML
authors.lastname: Ling
authors.affiliation: Division of Infectious Diseases, Thammasat University Hospital, Pratumthani, Thailand.
authors.forename: Anucha
authors.initials: A
authors.lastname: Apisarnthanarak
authors.affiliation: Medical Affairs, Johnson & Johnson Pte Ltd, Singapore.
authors.forename: Gilbert
authors.initials: G
authors.lastname: Madriaga