You get the stims free if you go to tatooine and just do the quest in the Dune Sea.
oh grow a pair!
its not like that horrid zombie event in wow. Everything about this event is just fun. got some fun dailies for all levels and virulent plague that has to be stopped. The serum lets you avoid it if u dont want it. Enjoy it while it lasts
compared to the last few days of wrath invasion, this is minor. you at least can run over to tatooine and do a quest chain and get immunized. during the wrath event I literally avoided the major cities for days. there was no option to do a quest to stop it...there wasn't even a vaccine available for any cost. you just had to accept that you would get ganked every 6 meters by a horde of undead.