An Ounce of Prevention

An Ounce of Prevention is a quest in Fallout 76.

Background
To survive against the Scorched Plague that spreads among the humans of Appalachia, the Responders attempted to create a vaccine years ago. The project was not successful at preventing their demise, but maybe Dr. Hudson left behind enough data to complete it and save the Vault 76 dwellers.

Detailed walkthrough

 * After completing Final Departure, the next stop is Charleston and the AVR Medical Center. Hudson's lab is located in the southwestern corner of the facility, in the basement (either drop down through the cafeteria floor or use the staircase by the street exit). Use the terminal to learn the story and that she almost completed her research. The automatic software set up by the doctor is set up to auto-create a vaccine from the DNA of feral ghouls.
 * The player characters need to collect that and a type-T fuse. The fuse can be found in the Charleston trainyard.
 * Each of the animals is located in the wilderness around Charleston: Mole rats are in the river bed, west of the Charleston trainyard, feral ghouls are found all over Charleston, mostly in the eastern parts and around the Capitol Building, while wolves are up the hill southeast of Charleston, up towards the Ash Heap.
 * Once the player character has all four ingredients, they just need to get back to the AVR Medical Center and Hudson's lab, place the replacement fuse in the fuse box under the stairs, put the blood samples in the centrifuge by the AVR medical terminal, analyze them, then use the Sympto-Matic to inoculate themselves. Claire Hudson's recording will play, directing them to the Fire Breathers of the Charleston Fire Department.

Behind the scenes
The title is a reference to the famous Benjamin Franklin axiom that "an ounce of prevention is worth a pound of cure," meaning that taking small steps to prevent a major problem is easier than dealing with the problem itself.

Bugs

 * Prior to patch 1.3.1.26, the map marker for the Type-T fuse may have focused on an underground tunnel instead of the item. The item could be found in an explosives crate in the eastern storage room of Greg's Mine Supply.
 * As of the aforementioned patch, the fuse is found in the Charleston trainyard instead.
 * The terminal used to operate the centrafuse does not analyze the blood samples and instead outputs "Requires blood" error messege.
 * Leave the server and go back to the main screen, then join Adventure Mode (public server) again. Now both quest goals "Install Type-T Fuse" and "Analyze Blood Sample" will appear again. After this, go to AVR Medical Center and install the Type-T fuse, then fast travel or otherwise leave the building and close the game. Reboot the game again and join Adventure Mode with both quest goals present. Go to AVR Medical Center and install the Type-T fuse once again, hit the terminal with "Analyze Blood Sample" and it should work.
 * This bug was fixed with Patch 22.

Un poco de prevención Une pincée de prévention Лучше перебдеть