Operation: V.I.R.U.S./Operation: O.U.T.B.R.E.A.K.

Operation: V.I.R.U.S./Operation: O.U.T.B.R.E.A.K. (Very Icky Research Under Sea/Overflowed Underwater Treehouse Bears Really Extra Awful Kontamination) are episodes of Codename: Kids Next Door. Operation: O.U.T.B.R.E.A.K. is the sequel to Operation: V.I.R.U.S.

Numbuh 1 tells Numbuhs 2, 3, and 4 to go stop an "evil gathering of teenagers" (a prom)

• Benjamin Diskin as Numbuhs 1 and 2
• Lauren Tom as Numbuh 3
• Dee Bradley Baker as Numbuh 4
• Cree Summer as Numbuh 5, Cree, Mrs. Lincoln
• Kevin Michael Richardson as Dr. Lincoln
• Charlie Schlatter as Numbuh 20,000

• Team Episode, but focused on Cree
• Villains: Cree
• Operative debuts: Numbuh 20,000
• KND Technology used: C.L.O.U.D.C.O.V.E.R., S.Q.O.O.S.H.E.R., S.P.L.A.N.K.E.R., S.P.I.C.E.R.
• Villains Technology used: B.R.A.

A virus previously unleashed by Cree is exposed in the KND Scientific Research Seabase. Sector V tries to capture the virus (Patient C) It is revealed in the end that the victim of the virus has cooties. Numbuh 5 doesn't believe this at all but the rest of the team are careful.

• Team Episode
• Villains: none
• KND Technology used: S.U.B.W.O.R.M., F.I.N.D.I.T., B.L.U.B.B.E.R.
• Villains Technology used: none

• Benjamin Diskin as Numbuhs 1 and 2
• Lauren Tom as Numbuh 3
• Dee Bradley Baker as Numbuh 4
• Cree Summer as Numbuh 5
• Dave Wittenberg as Numbuh 74.239
• Grey DeLisle as Patient C
• Charlie Schlatter as Numbuh 20,000

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