I have a 4-hour layover in PVG in July (OZ to SQ) and I understand that I don't need a visa for transit less than 24 hours (I am a Malaysian passport holder) - at least that's the info I got from the consulate's website.

Questions:
- Is it OK for me to transit without visa at PVG (the website doesn't looks like it's been updated for awhile)?
- Is there an airside transit?
- Is 4 hours connection enough (it's plenty...but are there any new delays due to the H1N1 flu scare)?
- *Knock on wood* what if someone has a slight fever around me? Will I be quarantined in PVG then?