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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 13D
Under the Securities Exchange Act of 1934
(Amendment No. )*
Name of Issuer: Quidel Corporation
Title of Class of Securities: Common Stock
CUSIP Number: 74838J101
(Name, Address and Telephone Number of Person
Authorized To Receive Notices and Communications)
Norman S. Schleifer
c/o Oracle Partners, L.P.
712 Fifth Avenue, 45th Floor
New York, New York 10019
(Date of Event which Requires Filing of this Statement)
July 22, 1999
If the filing person has previously filed a statement on Schedule
13G to report the acquisition which is the subject of this
Schedule 13D, and is filing this schedule because of
Rule 13d-1(e), 13d-1(f) or 13d-1(g), check the following box
[ ].
Note: Schedules filed in paper format shall include a signed
original and five copies of the schedule, including all exhibits.
See Rule 13d-7(b) for other parties to whom copies are to be
sent.
*The remainder of this cover page shall be filled out for a
reporting person's initial filing on this form with respect to
the subject class of securities, and for any subsequent amendment
containing information which would alter the disclosures provided
in a prior cover page.
The information required in the remainder of this cover page
shall not be deemed to be "filed" for the purpose of Section 18
of the Securities Exchange Act of 1934 ("Act") or otherwise
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subject to the liabilities of that section of the Act but shall
be subject to all other provisions of the Act (however, see the
Notes).
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CUSIP No.: 74838J101
1. Name of Reporting Person
I.R.S. Identification No. of Above Person
Larry N. Feinberg
2. Check the Appropriate Box if a Member of a Group
a.
b.
3. SEC Use Only
4. Source of Funds
WC
5. Check if Disclosure of Legal Proceedings is Required Pursuant
to Items 2(d) or 2(e)
6. Citizenship or Place of Organization
United States
Number of Shares Beneficially Owned by Each Reporting Person
With:
7. Sole Voting Power:
2,500,700
8. Shared Voting Power:
9. Sole Dispositive Power:
2,500,700
10. Shared Dispositive Power:
11. Aggregate Amount Beneficially Owned by Each Reporting Person
2,500,700
12. Check Box if the Aggregate Amount in Row (11) Excludes
Certain Shares
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13. Percent of Class Represented by Amount in Row (11)
10.5%
14. Type of Reporting Person
IN
*SEE INSTRUCTIONS BEFORE FILLING OUT!
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This Schedule 13D is being filed to report the beneficial
ownership of Larry N. Feinberg in the common stock of Quidel
Corporation of 10.5%. Mr. Feinberg previously reported his
beneficial ownership on Schedule 13G, the most recent filing
of which was filing of Amendment No. 2 to Schedule 13G on
July 20, 1999.
Item 1. Security and Issuer
This statement relates to shares of common stock
(the "Common Stock") of Quidel Corporation ("QDEL"). QDEL's
principal executive office is located at 10165 McKellar
Court, San Diego, California 92121-4201.
Item 2. Identity and Background
This statement is being filed on behalf of Mr.
Larry N. Feinberg. Mr. Feinberg is the managing general
partner of Oracle Partners, L.P. and Oracle Institutional
Partners, L.P., both of which are investment limited
partnerships (the "Partnerships"), and the President of
Oracle Investment Management, Inc., an investment advisor
that has investment discretion over certain managed
accounts. The principal offices of the Partnerships and
Oracle Investment Management, Inc. are at 712 Fifth Avenue,
45th Floor, New York, New York 10019.
Mr. Feinberg has not, during the last five years,
been convicted in a criminal proceeding (excluding traffic
violations or similar misdemeanors). Mr. Feinberg has not,
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during the last five years, been a party to a civil
proceeding of a judicial or administrative body of competent
jurisdiction which resulted in a judgment, decree or final
order enjoining future violations of, or prohibiting or
mandating activities subject to, federal or state securities
laws or finding any violations with respect to such laws.
Mr. Feinberg is a citizen of the United States of
America.
Item 3. Source and Amount of Funds or Other Consideration
As of the date hereof, Mr. Feinberg is deemed to
beneficially own 2,500,700 shares of QDEL's Common Stock
(the "Shares"). The Shares deemed to be beneficially owned
by Mr. Feinberg are held by (i) the Partnerships; (ii)
managed accounts over which Mr. Feinberg has investment
discretion; and (iii) Mr. Feinberg directly. The 2,500,700
Shares were purchased in open market transactions at an
aggregate cost of $9,713,706. The funds for the purchase of
the Shares held in the Partnerships came from capital
contributions to the Partnerships by their general and
limited partners. The funds for the purchase of the Shares
held in the managed accounts came from each managed
account's own funds. The funds for the purchase of the
Shares of Common Stock held by Mr. Feinberg came from his
own funds. No leverage was used to purchase the Shares.
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Item 4. Purpose of Transaction
The Shares deemed to be beneficially owned by Mr.
Feinberg were acquired for, and are being held for,
investment purposes. Mr. Feinberg may acquire additional
shares of Common Stock, dispose of all or some of the Shares
from time to time, in each case in open market transactions,
block sales or purchases or otherwise, or may continue to
hold the Shares.
Mr. Feinberg does not have any plan or proposal
which relates to, or would result in, any of the actions
enumerated in Item 4 of the instructions to Schedule 13D.
However, Mr. Feinberg reserves the right to discuss company
business with management, make proposals to management
and/or take other actions to influence the management of
QDEL should he deem such actions appropriate.
Item 5. Interest in Securities of the Issuer
As of the date hereof, Mr. Feinberg is deemed to be
the beneficial owner of 2,500,700 shares of QDEL's Common
Stock. Based on QDEL's most recent Form 10-K filed on June
29, 1999, as of June 18, 1999 there were 23,822,491 shares
of QDEL's Common Stock outstanding. Therefore, Mr. Feinberg
is deemed to beneficially own 10.5% of QDEL's outstanding
shares of Common Stock. Mr. Feinberg has the power to vote,
direct the vote, dispose of or direct the disposition of all
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the shares of QDEL's Common Stock he is currently deemed to
beneficially own.
Item 6. Contracts, Arrangements, Understandings or
Relationships With Respect to Securities of
the Issuer
Mr. Feinberg does not have any contract,
arrangement, understanding or relationship with any person
with respect to the Common Stock of QDEL.
Item 7. Material to be Filed as Exhibits
Attached hereto as Exhibit A is a description of
the transactions in the Common Stock of QDEL that were
effected by Mr. Feinberg during the past 60 days.
Signature
The undersigned, after reasonable inquiry and to
the best of his knowledge and belief, certifies that the
information set forth in this statement is true, complete
and correct.
July 22, 1999
/s/ Larry N. Feinberg
________________________________
Larry N. Feinberg
00751001.BC6
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EXHIBIT A
Schedule of Transactions
Date Shares Purchased
or (Sold) Price Per Share
6/30/99 5,500 $3.125
6/30/99 10,000 3.118
6/30/99 3,000 3.1875
7/14/99 54,700 3.3342
7/16/99 70,000 3.625
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00751001.BC6
