Sherlock Sickfic: Inconvenienced by HedgehogJawn

Title: Inconvenienced
Author: HedgehogJawn
Gender Getting Sick: Male
Character Relationship: Friends
Link: http://archiveofourown.org/works/984722/chapters/1940336

This is a multi chapter fic mostly with Sherlock being sick and John taking care of him, but at end John is sick and Sherlock is taking care of him. A few mentions of vomit, but not every chapter and mostly just brief mentions.

Sherlock Sickfic: In His Brother's Shoes by Wordgrrrl

Title: In His Brother's Shoes
Author: Wordgrrrl
Gender Getting Sick: Male
Character Relationship: Gay couple
Link: https://www.fanfiction.net/s/10560650/1/In-His-Brother-s-Shoes

Sherlock gets sick at his parent's wedding anniversary party. John and Sherlock are portrayed as a couple, but barely mentioned and could almost be read as just friendship. Also, some of the comfort part comes from his parents.

Big Hero 6 Sickfic: Don't Wanna Move by Glue09

Title: Don't Wanna Move
Author: Glue09
Gender Getting Sick: Male
Character Relationship: Brothers
Link: http://archiveofourown.org/works/3504581

Good brother hurt/comfort relationship with Tadashi taking care of Hiro when he has the stomach flu and ending up sick as well.

Stargate Atlantis Sickfic: Stenosis by Jessica

Title: Stenosis
Author: Jessica
Gender Getting Sick: Male
Character Relationship: Gay couple
Link: http://www.wraithbait.com/viewstory.php?sid=10410

This is a short hurt/comfort featuring Rodney getting sick and John taking care of him.

Stargate SG-1 Sickfic: No Profound Truth by babs

Title: No Profound Truth
Author: babs
Gender Getting Sick: Male
Character Relationship: Friends/Gay?
Link: http://archiveofourown.org/works/185988

Daniel gets seasick and mostly Jack takes care of him.

Stargate Atlantis Sickfic: The Reluctant Hero by Kodiak Bear Country

Title: The Reluctant Hero
Author: Kodiak Bear Country
Gender Getting Sick: Male and Female
Character Relationship: Coworkers
Link: https://www.fanfiction.net/s/2895398/1/The-Reluctant-Hero

This is a long one, but there's some decent hurt/comfort with three getting food poisoning and one suffering from appendicitis.

Stargate Atlantis Sickfic: Whirl by peanutbutterer

Title: Whirl
Author: peanutbutterer
Gender Getting Sick: Female
Character Relationship: Straight/Heterosexual
Link: https://www.fanfiction.net/s/3274382/1/Whirl

Good descriptive Stargate: Atlantis fanfiction about Elizabeth getting sick and John taking care of her, especially if you're into the nausea/build up stuff.

Castle Sickfic: Five Sneezes by honeyandvodka

Title: Five Sneezes
Author: honeyandvodka
Gender Getting Sick: Female
Character Relationship: Father/Mother/Daughter (Ch. 1-2), Straight Couple (Ch. 3-5)
Link: https://www.fanfiction.net/s/9564470/1/Five-Sneezes

Mostly just colds type sickfic with each chapter being a different time Beckett is sick, but there is brief vomit parts in Chapters 3 and 5.

Percy Jackson and the Olympians Sickfic: fine, we're damaged by sxldato

Title: fine, we're damaged
Author: sxldato
Gender Getting Sick: Male
Character Relationship: Gay Couple (?)
Link: http://archiveofourown.org/works/2728868

Nico is sick and Will takes care of him. More about the nausea, but there's some puke, too.

Grimm Sickfic: On the Finer Points of Monster Slaying by virgo_79

Title: On the Finer Points of Monster Slaying
Author: virgo_79
Gender Getting Sick: Male
Character Relationship: Friends
Link: http://grimm-kink.dreamwidth.org/1735.html?thread=950471

Monroe takes care of Nick, who is suffering from a migraine, in this Grimm fanfic. Good hurt/comfort with some puking moments.