You go to the various organs in order: stomach, hand, mouth (via stomach), intestines, heart, arm, brain, and lungs. Defeating the virus in the lungs ends the quest.
(see related solution questions)
The 35th island (August 2013) will be Virus Hunter Island.
The game saves by itself.
You go out the way you came.
That is not part of the island quest.
The exit of the hand is at the upper left.
You look for a piece of mail with the name Joe Stockholm on it.
He isn't named, so we don't know.
Well since the last island was Virus Hunter island, the next one will be Poptropilis Games 2013.
Select it from the island map. (Paid members only could play 8/29 to 9/12/2013.)
It is on the page farthest left, as you click to move to pages left or right.
To obtain the scanning card for Globochem on Virus Hunter Island, you need to complete specific tasks or quests given by NPCs in the game. Typically, this involves gathering certain items or defeating particular enemies associated with Globochem. Once you fulfill these requirements, you can access the location where the scanning card is located or receive it directly from an NPC. Be sure to check your quest log for any detailed instructions related to this objective.
If you are stuck (cannot click to exit to the stomach), try rebooting Poptropica in your browser. If you are still stuck, try going to Home, then the Store, and get the Haunted House card, which is the only way initially to leave Virus Hunter Island. Several glitches were the result of programming errors that locked up browsers during the first month of the island's appearance.