There are at least 5 artists with the name Patient Zero:

1. Death metal from San José, Costa Rica

Bandcamp

2. The second Patient Zero is an electronic music artist who has released ten albums since 2008:

2008: Smoking Kills
2009: Malpractice; Detox Detox; Schizophrenia; Diabolus Ex Machina
2010: Iconoclasm; Supernova 1987A; Monster; Adversary
2011: Screen Saviour

On September 1st, 2011 Patient Zero released the first single from his unnamed upcoming album, called "Crowd of Fools". The album is expected to be released in late 2011.

Patient Zero helped create the netlabel 'Electropoetic"

3. The third is a fast hardcore band from Boston, UK, who started out as a 4-piece about 5 years ago.

At the time, the members of this particular iteration of Patient Zero were in other bands but they wanted to play fast hardcore like Limp Wrist & Urko, they got together and did just that.

They played a few gigs, did a demo or two, a split 7" w/Hryðjuverk! on Holy Shit Records [Leeds], played in Iceland then broke up due to personal differences.

Then they got asked to play a one-off gig [which never happened] & got Tommy, then Luke to fill in on bass. They played a load more gigs then got Daz to play bass & Luke switched to second guitar. Around this time, Joe quit so Matt said he'd play drums. New record in the works!

Current Line-Up:
Dan
Daz
Luke
Matt
Steve

Original Line-Up:
Ady
Dan
Joe
Steve

4. The fourth Patient Zero was an Estonian post hardcore band active around the late nineties.

5. The fifth Patient Zero is an international collaboration between Waatu (Canadian beat writer, MC & producer) and Shep (UK bass player and FX obsessive), bringing bass heavy beats, guest MC performances from around the world & grooves to die for. This is hip-hop blended with electronica at it’s finest.

The Patient Zero Project remains a truly international entity, expanding on it’s global reach with each and every release.

Patient Zero is:
Waatu – Beats, Breaks & Post-Production
Shep – Bass, Noise & Sonic Deconstruction Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.