don't worry about the credit check for renting.
u could show your hubby's pay check stub to the landlord and ask his HR for an employment verification letter showing his salary income.
If 磷狀病毒 means Rotavirus, then Rotavirus (taken orally) at 2, 4 and 6 months and cannot be taken after 8 months old. If it's taken at 1 yr old in HK and you want to take it, u better take it in HK.