According to Russian anti-virus company Dr. Web, around 0.1% of the 550,000 Macs infected so far by the Flashback malware are from the Philippines. That’s only about 550 Filipino Mac users but you could be one of them.
In April 4, Dr. Web reported that the spread of the Trojan BackDoor.Flashback has reached over 550,000 computers running Mac OS X (around 550 of which were detected to come from the Philippines).

Infection is done via the browser that downloads and installs a plugin to run a Java-applet containing an exploit.
Several sites known to host this malware include ustreambesttv.rr.nu, ustreamtvonline.rr.nu, ustream-tv.rr.nu and ustream.rr.nu among others. Right now, if you are using a Mac or running Mac OS X, the only way to know if you have been infected is to open Terminal and run these commands:
defaults read /Applications/Safari.app/Contents/Info LSEnvironment
defaults read /Applications/Firefox.app/Contents/Info LSEnvironment
defaults read ~/.MacOSX/environment DYLD_INSERT_LIBRARIES
CNet has a more comprehensive instructions here on how to detect and clean up your Mac in case you’re infected.
Source: Dr. Web

Apple did good to contain the damage. I do not like the MAC OS,but you guys got to admit, its probably the best OS out there bar none :)