
525 F.Supp.2d 1049 (2007)
MORTON GROVE PHARMACEUTICALS, INC., Plaintiff,
v.
The NATIONAL PEDICULOSIS ASSOCIATION, INC., Ecology Center, Inc., William. B. Weil, MD, Defendants.
No. 06 C 3815.
United States District Court, N.D. Illinois, Eastern Division.
November 30, 2007.
*1050 Timothy Joseph Rivelli, Cherish M. Keller, W. Gordon Dobie, William Charles O'Neil, Winston & Strawn LLP, Chicago, IL, for Plaintiff.
Richard M. Waris, Amy Joan Thompson, James Joseph Sipchen, Pretzel & Stouffer, Chtd., Debbie L. Berman, Amanda S. Amert, Jennifer Ann Hasch, Jenner, & Block LLP, Chicago, IL, Wade A. Thompson, Jenner & Block LLP, Chicago, IL Edward J. Aucoin, Jr., Hinshaw & Culbertson, Lisle, IL, for Defendants.

MEMORANDUM OPINION AND ORDER
ELAINE E. BUCKLO, District Judge.
Defendant the National Pediculosis Association, Inc. ("NPA") has brought a motion to dismiss or sever the claims against it alleged in the second amended complaint ("complaint") by plaintiff Morton Grove Pharmaceuticals, Inc., ("MGP") as improperly joined under FED. R. CIV. P. 20(a).[1] The remaining defendants have joined in NPA's motion. For the following reasons, the motion to sever is granted.

I.
MGP, a Delaware corporation, is a pharmaceutical company with its principal place of business in Morton Grove, Illinois. MGP manufactures Lindane Lotion and Lindane Shampoo, which are FDA-approved medications for the treatment of lice and scabies.
NPA is a non-profit, tax exempt Massachusetts corporation which sells the LiceMeister comb. The Ecology Center ("the Center") is a non-profit environmental group based in Ann Arbor, Michigan. William B. Weil is a physician licensed to practice in the field of pediatric medicine in Michigan.
MGP has filed claims for defamation (Count II); trade disparagement (Count III); and violations of the Illinois Uniform Deceptive Trade Practices Act ("UPTPA"), 815 ILCS 510/2 et. seq. (Count IV) against all defendants. MGP has also filed a claim of a violation of the Lanham Act, 15 U.S.C. § 1125(a) solely against NPA (Count I).

II.
In order to permissively join defendants under FED. R. CIV. P. 20(a), the right to relief must arise out of "the same transaction, occurrence, or series of transactions or occurrences," and there must be a question of law or fact common to all defendants. See DIRECTV, Inc. v. Adrian, No. 03 C 6366, 2004 WL 1146122, *2, 2004 U.S. Dist. LEXIS 8922, at *5 (N.D.Ill. May 18, 2004) (Plunkett, J.).
*1051 In this case, the complaint does not allege any claims which arise out of, the same transaction, occurrence, or series of transactions or occurrences. The nature of the separate defendants' alleged improper actions  dissemination of different statements  are plainly separate occurrences. Nor does the complaint allege a conspiracy or any concerted action among NPA and any remaining defendant.
In its brief, MGP argues that NPA and the remaining defendants were acting in concert in light of (1) the similarity among some of the allegedly injurious statements; (2) the fact that one of the statements contained in the Center's literature contains a reference to the LiceMeister Comb and to NPA, as the product's manufacturer, as an example of a non-chemical approach to treating lice infestation and that the NPA website identifies the Center in connection with similar public health campaigns in other states; and (3) a response by one of the Center's employees to an interrogatory identifying one communication with NPA. MGP's arguments fail to make up for the absence of any allegations of concerted action between defendants in its complaint. See Adrian, 2004 WL 1146122, at *3, 2004 U.S. Dist. LEXIS 8922, at *7-8; Directv, Inc. v. Delaney, No. 03 C 3444, 2003 WL 24232530, *5, 2003 U.S. Dist. LEXIS 24262, at *16-17 (N.D.Ill. Nov. 20, 2003) (Kocoras, J.); DirecTV, Inc. v. Joe Serio, No. 03 C 3491, 2003 WL 22682354, *1, 2003 U.S. Dist. LEXIS, at *2-3 (N.D.Ill. Nov. 12, 2003) (Coar, J.); United States v. Alaska Pipeline Co., No. Civ. 95-725(TFH), 1997 WL 33763820, *2, 1997 U.S. Dist. LEXIS 5221, at *3-6 (D.D.C. Mar. 27, 1997). First, the statements made by the different defendants are not identical and are consistent with the fact that they are addressing the same subject matter  the purported health risks associated with lindane. The similarity of defendants' actions may speak to the second prong of Rule 20(a)'s test  common questions of law or fact  more than it does with respect to whether there was a concerted effort among defendants. Second, the fact that the Center and NPA are aware of each other's existence does not mean that they are acting in concert. In each statement in which the defendants have referenced each other, they fail to identify any connection or concerted effort among them. The single reference to NPA and its product in one particular statement by the Center is consistent with the subject matter underlying the statements  alternatives to the use of shampoos containing lindane. Similarly, the NPA website contains information about at least five other organizations (in addition to the Center), which MGP does not allege are acting in concert with defendants. Third, the interrogatory response is completely silent as to the contents of the single communication between a Center employee and an NPA employee and, even in conjunction with the statements at issue, does not compel the conclusion that NPA was acting in concert with the remaining defendants. Accordingly, NPA was improperly joined under Rule 20(a) and, in my discretion under FED. R. CIV. P. 21, the motion to sever is granted.

III.
For the foregoing reasons, the motion to sever is granted.
NOTES
[1]  Although NPA had previously filed a motion to dismiss raising 1 the issue of misjoinder under FED. R. Cm P. 20(a), that issue was moot at the time I decided Morton Grove Pharm., Inc. v. Nat'l Pediculosis Ass'n, Inc., 494 F.Supp.2d 934 (N.D.Ill. June 18, 2007).
