Until more is known about the aetiological agent, and the potential for continued carriage (and hence the risk of continuing transmission) a cautious approach is warranted.

• 在对引起疾病的病原体的认识是完全弄清之前，经过治疗好转出院的病人仍然可能持续携带病原体（因此仍然具有可能传染他人的危险）。