SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                                    ________

                                    FORM 6-K

                        REPORT OF FOREIGN PRIVATE ISSUER
                      PURSUANT TO RULE 13a-16 OR 15d-16 OF
                       THE SECURITIES EXCHANGE ACT OF 1934

                         For the month of February, 2004

                                   Serono S.A.
                    ----------------------------------------
                               (Registrant's Name)

                            15 bis, Chemin des Mines
                                 Case Postale 54
                                CH-1211 Geneva 20
                                  Switzerland
                    ----------------------------------------
                    (Address of Principal Executive Offices)

                                     1-15096
                    ----------------------------------------
                              (Commission File No.)

     (Indicate  by  check  mark whether the registrant files or will file annual
reports  under  cover  of  Form  20-F  or  Form  40-F.)

     Form 20-F  X  Form 40-F
               ---           ---

     (Indicate  by  check  mark  if the registrant is submitting the Form 6-K in
paper as permitted by Regulation S-T Rule 101 (b)(1).) ______

     (Indicate  by  check  mark  if the registrant is submitting the Form 6-K in
paper as permitted by Regulation S-T Rule 101 (b)(7).) ______

     (Indicate  by  check  mark  whether  the  registrant  by  furnishing  the
information contained in this form is also thereby furnishing the information to
the  Commission  pursuant to Rule 12g3-2(b) under the Securities Exchange Act of
1934.)

     Yes       No  X
          ---     ---

     (If  "Yes"  is  marked,  indicate  below  the  file  number assigned to the
registrant  in  connection  with  Rule  12g3-2(b):  82-______)



                                                                    SERONO
                                                               [GRAPHIC  OMITED]

MEDIA  RELEASE

FOR  IMMEDIATE  RELEASE
-----------------------


  LOW DOSE MAINTENANCE THERAPY WITH RECOMBINANT HUMAN GROWTH HORMONE MAY SUSTAIN
        PREVIOUS SEROSTIM(R) TREATMENT IN HIV POSITIVE PATIENTS WITH HARS

  NEW DATA PRESENTED AT A RECENT MEDICAL MEETING ON HIV AND INFECTIOUS DISEASES


ROCKLAND,  MA,  FEBRUARY  12,  2004  -  Serono, Inc., the US affiliate of Serono
(virt-x:  SEO  and  NYSE:  SRA),  announced  new  clinical  data  on Serostim(R)
[somatropin  (rDNA  origin) for injection] as a potential maintenance therapy to
sustain  reductions  in  excess  visceral  fat  accumulation  in  patients  with
HIV-associated  adipose  redistribution  syndrome  (HARS)  who  had  previously
received  Serostim(R)(1) induction therapy. The data was recently presented at a
medical  meeting  on HIV and infectious diseases. HARS is a debilitating medical
condition  experienced  by  people  being treated for HIV and for which there is
currently no medical treatment. The visceral adipose tissue accumulation seen in
HARS  may  be  associated  with  an  adverse  risk  profile.

"Based  on  its  efficacy  and  safety profile, a low dose of Serostim(R) merits
additional  investigation  as a maintenance therapy for HIV patients with HARS,"
said  study  lead  investigator,  Donald  P.  Kotler, M.D., St. Luke's Roosevelt
Hospital,  New  York.

A  prospective, multi-center, randomized, dose-finding extension trial evaluated
the  safety  and  efficacy of Serostim(R) maintenance therapy, administered at a
dose  of  1 or 2 mg daily, to sustain reductions in excess trunk fat in patients
with  HARS  following  treatment  with Serostim(R) at a higher dose.  Laboratory
measurements  of  potential  metabolic  conditions  occurring with HARS, such as
lipid  profiles,  were  also  included.

Serono  has  previously  reported  positive  findings  of  Serostim(R)  for  the
Treatment  of  Adipose  Redistribution  Syndrome  (STARS) study, a double-blind,
placebo-controlled  study,  designed to evaluate Serostim(R) as a potential HARS
therapy.  The  study  results showed that Serostim(R) 4mg administered daily for
12  weeks decreased visceral adipose tissue and trunk fat as compared to placebo

--------------------
1    Serostim(R) is currently not approved for the treatment of HARS.



(p<0.001).  A  significant  decline in total and non-HDL cholesterol as compared
to  placebo  was  also  observed  (p<0.005).

The  present  trial  was  an extension of the STARS study. The maintenance phase
involved  142  HIV  positive  patients  with  HARS  and demonstrated significant
reductions (p<0.01) in trunk fat, non-HDL cholesterol and total cholesterol from
the  trial  baseline  to  week  60  in  patients  taking  either 1 mg or 2 mg of
Serostim(R)  as  a  maintenance  therapy.

"Serono  is  committed  to  continuing  research  aimed  at  resolving metabolic
complications  associated with HIV, including HARS," commented Paul Lammers, MD,
MSc,  Chief  Medical  Officer,  Serono,  Inc.

HIV-associated  adipose  redistribution  syndrome  or  HARS  is  a subset of HIV
lipodystrophy.  HIV-associated  lipodystrophy  is  characterized by a variety of
metabolic  disturbances  and  body  shape  abnormalities  that  may  present
individually  or  in  combination.

Patients  with  HARS  experience  abnormal, pathological accumulation of adipose
tissue,  which  may  be  present  with or without fat depletion and/or metabolic
abnormalities.  In  general,  HARS  patients  accumulate excess visceral adipose
tissue  in the abdomen or may develop a fat pad on the upper back commonly known
as  a  "buffalo  hump."

ABOUT  SEROSTIM(R)
Serostim(R)  [somatropin  (rDNAorigin) for injection] is the only growth hormone
approved by the US Food and Drug Administration for the treatment of HIV wasting
or cachexia. The recommended dose is 0.1 mg/kg daily (6 mg/day for patients > 55
kg).  Serostim(R)  0.1  mg/kg every other day should be considered as a starting
dose in patients thought to be at risk of certain adverse effects, i.e., glucose
intolerance.

In  patients with HIV-associated wasting, Serostim(R) has a generally manageable
side  effect profile. The most common adverse events associated with Serostim(R)
therapy  are mild to moderate muscle and joint pain and swelling, which occur in
a  dose-related  manner  and  often  subside  with  continued  treatment or dose
reduction.  Cases  of  new  onset impaired glucose intolerance, new onset Type 2
diabetes  mellitus  and  exacerbation of preexisting diabetes mellitus have been
reported  in  patients  receiving  Serostim(R).  Some  patients develop diabetic
ketacidosis  and  diabetic  coma.  In  some  patients,  therapy with Serostim(R)
necessitated  initiation or adjustment of anti-diabetic treatment. Patients with
a  history of hyperglycemia or other risk factors for glucose intolerance should
be  monitored  closely during treatment with Serostim(R). Transient increases in
glucose  levels  occur  early  in  treatment  and  should  be  monitored.



Use  of  growth hormone is contraindicated in treatment of patients in intensive
care  units  due  to  complications  following  open-heart  surgery or abdominal
surgery,  multiple accidental trauma or acute respiratory failure; patients with
active  neoplasia;  and  patients with known hypersensitivity to growth hormone.
Serostim(R) must be used in conjunction with antiretroviral therapy.

Full  prescribing  information  for  Serostim(R),  including  important  safety
information,  is  available  at  www.serostim.com.
                                 ----------------


ABOUT  SERONO
Serono,  Inc.,  located in Rockland, MA, is the US affiliate of Serono, a global
biotechnology  leader,  headquartered  in  Geneva,  Switzerland. The Company has
seven  recombinant  products,  Rebif(R)  (interferon  beta-1a),  Gonal-F(R)
(follitropin  alfa  for  injection),  Luveris(R)  (lutropin  alfa),
Ovidrel(R)/Ovitrelle(R)  (choriogonadotropin  alfa  injection),  Serostim(R)
[somatropin  (rDNA  origin)  for injection], Saizen(R) [somatropin (rDNA origin)
for  injection]  and  Zorbtive(TM)  [somatropin  (rDNA  origin)  for injection].
(Luveris(R)  is  not  approved  in  the USA.)(2). In addition to being the world
leader  in reproductive health, Serono has strong market positions in neurology,
metabolism  and  growth.  The Company's research programs are focused on growing
these businesses and on establishing new therapeutic areas. Currently, there are
approximately  30  ongoing  development  projects.

In  2003,  Serono  achieved  worldwide revenues of US$2,018.6 million, and a net
income  of  US$390.0 million, making it the third largest biotech company in the
world. Its products are sold in over 90 countries. Bearer shares of Serono S.A.,
the  holding company, are traded on the virt-x (SEO) and its American Depositary
Shares  are  traded  on  the  New  York  Stock  Exchange  (SRA).


                                       ###

Some  of  the  statements  in  this  press  release  are  forward  looking. Such
statements  are inherently subject to known and unknown risks, uncertainties and
other  factors  that  may  cause  actual results, performance or achievements of
Serono  S.A.  and  affiliates  to be materially different from those expected or
anticipated  in  the  forward-looking statements. Forward-looking statements are
based on Serono's current expectations and assumptions, which may be affected by
a  number  of  factors, including those discussed in this press release and more
fully  described  in  Serono's  Annual  Report  on Form 20-F filed with the U.S.
Securities and Exchange Commission on April 17, 2003.  These factors include any
failure  or  delay  in  Serono's ability to develop new products, any failure to
receive  anticipated  regulatory  approvals,  any  problems  in  commercializing
current  products  as  a  result of competition or other factors, our ability to
obtain  reimbursement  coverage  for  our  products,  and government regulations
limiting  our  ability  to  sell  our  products. Serono has no responsibility to
update the forward-looking statements contained in this press release to reflect
events  or  circumstances  occurring  after  the  date  of  this  press release.


                                       ###

-----------------------
2  Package  inserts  for  Serono's  US  marketed  products  are  available  at
www.seronousa.com  or  by  calling  1-888-275-7376.
-----------------



FOR MORE INFORMATION, PLEASE CONTACT:

SERONO, INC., ROCKLAND, MA
MEDIA  RELATIONS:               INVESTOR RELATIONS:
Tel.  +1 781 681 2340           Tel.  +1 781 681 2552
Fax:  +1 781 681 2935           Fax:  +1 781 681 2912

SERONO IN GENEVA, SWITZERLAND:
MEDIA  RELATIONS:               INVESTOR  RELATIONS:
Tel:  +41-22-739 36 00          Tel:  +41-22-739 36 01
Fax:  +41-22-739 30 85          Fax:  +41-22-739 30 22
http://www.serono.com           Reuters:  SEOZ.VX / SRA.N
---------------------           Bloomberg:  SEO VX / SRA US




                                   SIGNATURES

     Pursuant  to  the  requirements of the Securities Exchange Act of 1934, the
registrant  has  duly  caused  this  report  to  be  signed on its behalf by the
undersigned,  thereunto  duly  authorized.



                                   SERONO  S.A.
                                   a  Swiss  corporation
                                   (Registrant)



February 12, 2004                  By:     /s/  Allan Shaw
                                           -------------------------
                                   Name:   Allan Shaw
                                   Title:  Chief Financial Officer