As plaintiffs in the District Court our appellants alleged in their complaint that the Secretary of Agriculture was violating certain provisions of the Wholesome Meat Act, 21 U.S.C. §§ 601 et seq., and the Wholesome Poultry Products Act, 21 U.S.C. §§ 451 et seq. Specifically, they alleged that the Secretary was wrongfully refusing to affix to meat and poultry products, inspected by the Department of Agriculture, labels containing handling and preparation instructions to protect the consumer against food poi*332soning caused by salmonellae and other bacteria. The complaint prayed that the Secretary be enjoined “from affixing the label ‘U.S. Passed and Inspected’ or ‘U.S. Inspected for Wholesomeness’ on meat and poultry unless it is accompanied by an adequate explanation to the consumer that the product may contain organisms capable of causing food poisoning or infection which will multiply unless the product is properly handled and cooked, along with proper instructions on how to minimize such risk.” In substance, the plaintiffs claimed that the official inspection labels constituted misbranding. On cross motions for summary judgment the District Court granted the defendants’ motion and dismissed the case.
In the Poultry Products Inspection Act, Pub.L.No.85 — 172 (Aug. 28, 1957), as amended by the Wholesome Poultry Products Act, Pub.L.No.90-492 (Aug. 18, 1968), and the Federal Meat Inspection Act of March 4, 1907, ch. 2907, 34 Stat. 1260, as amended by the Wholesome Meat Act, Pub.L.No.90-201 (Dec. 15, 1967), Congress declared its intent ,to protect the health and welfare of consumers and to prevent and eliminate burdens on commerce by assuring that meat and poultry products are wholesome and properly labeled. 21 U.S.C. §§ 451, 452, 602. To help achieve these ends, Congress required inspections at packing plants for both meat and poultry and their products. 21 U.S.C. §§ 455, 603 — 605. In the case of meat, if the item is found to be not adulterated, Congress has further required inspectors appointed by the Secretary of Agriculture to mark, stamp or label the item “Inspected and passed.” 21 U.S.C. §§ 604, 606. In the case of poultry, if the item is found to be not adulterated, the Secretary is required to affix an official inspection legend on the item or on its container. 21 U.S.C. §§ 453(h)(12), 457(a). Under his statutorily delegated authority to promulgate necessary regulations, 21 U.S.C. §§ 463(b), 607(c), the Secretary has provided markings for poultry and meat products. See 9 C.F.R. § 381.96 (1974) (poultry); 9 C.F.R. §§ 312.2, 312.3 (1974) (meat).
Salmonellae are bacteria found in meats, poultry, eggs and their products. Salmonellosis or “food poisoning” caused by the ingestion of salmonellae may produce nausea, abdominal cramps, vomiting, high fever, dizziness, headaches, dehydration and diarrhea. Preventive measures against salmonellae are care in cooking and storage of foods, and adequate refrigeration. To prevent cross-contamination from raw material to finished food, utensils, working surfaces and the hands of food preparers should be thoroughly washed. Proper cooking destroys salmonellae.
As alleged in the complaint, and established by the record, “The inspection procedures now required by the Wholesome Meat Act and the Wholesome Poultry Products Act do not include any investigation to detect the presence of salmonella in meat or poultry, because no such microscopic examination is considered feasible as a routine matter.” The reason for this situation is apparent: a poultry inspector, for example, may conduct post mortem examinations of more than 10,000 birds in one day. Microscopic examination of each bird would obviously be impractical. Recognizing and accepting this fact the appellants do not seek revision of inspection techniques. They argue however that since salmonellae are likely to be present in all meat' and poultry the inspection labels used by the Department of Agriculture create a false sense of security in consumers. In terms of the statutes the appellants say the inspection labels are “false or misleading” so that the meat and poultry to which they are affixed are “misbranded”. See 21 U.S.C. § 453(h)(1), (12); 21 U.S.C. § 601(n)(l), (12). The remedy, according to the appellants, is the inclusion of preparation and handling instructions on each label.
The appellants presented their case to the Secretary of Agriculture in letters and conferences beginning with a letter on June 28, 1971. In this letter the appellants referred to a report issued by the Department of Agriculture on the salmonellae problem, together with other documentation, and urged the Secretary *333to require the following label or some reasonable equivalent to be affixed to all raw meat and poultry approved for human consumption:
Caution: Improper handling and inadequate cooking of this product may be hazardous to your health. Despite careful government inspection, some disease-producing organisms may be present. Consult your local health department for information on the safe handling and preparation of this product.
In response the Department by letter of July 21, 1971, expressed its concern with the salmonellae problem and its recognition of the importance of control of salmonellosis. The Department quoted from a report of the National Research Council which stated:
“ . . . the problem of controlling salmonellosis in man is greatly complicated because of the widespread distribution of the organisms in the environment and the many ways by which they can reach the host.”
“Recent experience has implicated a variety of processed foods and drugs (e. g., egg products, dry milk, coconut, inactive dry yeast. . . .) in outbreaks of salmonellosis.”
The Department’s letter concluded that since “there are numerous sources of contamination which might contribute to the overall problem” it would be “unjustified to single out the meat industry and ask that the Department require it to identify its raw products as being hazardous to health. Such an act would have to apply to any and all sources of salmonellae in order to be fairly administered.”
Dissatisfied with the Department’s response of July 21 the appellants on July 29, 1971 again wrote to the Secretary requesting that he “review this situation once again, and in the interests of the consumers’ health and safety take prompt action to avoid the continuation of the mis-labeling and misbranding as ‘U.S. Inspected’ and ‘U.S. Inspected for Wholesomeness’ [of] contaminated raw meats and poultry.” In response the Department on August 18, 1971, wrote
you appear to disregard the fact that the American consumer knows that raw meat and poultry are not sterile and, if handled improperly, perhaps could cause illness.
The Department’s philosophy in this matter is that the salmonella problem can be handled most effectively at the consumer level where all contributing factors converge — where the final preparation of food takes place. The consumer education program which you have advocated would fit in well with this concept and would be instrumental in informing the American public of the proper methods for handling all foods, including meat and poultry, so that any hazard is reduced to a minimal level.
The Department reiterated this position in a letter of October 20, 1971 as follows:
You will recall that we firmly believed that the salmonella problem could be handled most effectively at the consumer level where final food preparation took place. We maintained then, and wish to reemphasize now, that a soundly designed consumer education program is the best manner in which to approach the entire problem of food-borne disease. Such a program would reduce the incidence of mishandling of foods and thereby reduce potential hazards to a minimum.
The Department is actively supporting a number of consumer education programs which are designed with this goal in mind. We would hope you and your respected organization would join with us in this effort.
On December 7, 1971 the appellants renewed their request and proposed a label to this effect:
WARNING: This product may contain bacteria which can cause food-poisoning. Refrigeration and adequate cooking will make it safe to eat. To keep bacteria from spreading to other foods: (1) Do not let other foods touch this uncooked product or the surfaces where it has been placed. (2) After *334handling, carefully wash your hands and all equipment which touched the raw product.
In a meeting on December 21, 1971 between officials of the Department and representatives of the appellants the Department finally rejected the appellants’ proposal and took the position that a consumer education program on the proper way to handle and prepare meat and poultry was the answer to the problem. This lawsuit followed.
The Wholesome Poultry Products Act, 21 U.S.C. §§ 453(h)(1) and (12), provides that an article is “misbranded”
(1) If its labeling is false or misleading in any particular;
* * * * * *
(12) If it fails to bear on its containers, and in the case of nonconsumer packaged carcasses (if the Secretary so requires) directly thereon, as the Secretary may by regulations prescribe, the official inspection legend . and, unrestricted by any of the foregoing, such other information as the Secretary may require in such regulations to assure that it will not have false or misleading labeling and that the public will be informed of the manner of handling required to maintain the article in a wholesome condition.
Similar provisions appear in the Wholesome Meat Act, 21 U.S.C. §§ 601(n)(l), (12). The appellants contend that the official inspection legends are false and misleading and therefore constitute misbranding within the meaning of these statutes, since the legends fail to warn against the dangers of salmonellae. The appellants argue further that the Secretary has abused his discretion by refusing to supplement the inspection legends with a warning and instructions for the storage and preparation of meat and poultry. We are not persuaded by the appellants’ arguments.
The Wholesome Meat Act, 21 U.S.C. § 604, providing for inspections, requires that meat “found to be not adulterated shall be marked, stamped, tagged, or labeled as ‘Inspected and passed’ ”. The “U.S. Inspected and passed” legend therefore conforms to the statute; and unless the presence of salmonellae makes meat “adulterated” the legend is not false or misleading. The term “adulterated” is defined by the statute, 21 U.S.C. § 601(m), and we think that the presence of salmonellae in meat does not constitute adulteration within this definition. The definition is directed at poisonous or deleterious additives and filthy, putrid or decomposed substances but not at substances such as salmonellae which may be inherent in the meat. This we think plainly appears from 21 U.S.C. § 601(m)(l) which provides:
The term “adulterated” shall apply to any . . . meat . . .:
(1) if it bears or contains any poisonous or deleterious substance which may render it injurious to health; but in case the substance is not an added substance, such article shall not be considered adulterated under this clause if the quantity of such substance in or on such article does not ordinarily render it injurious to health; [emphasis supplied.]
As the Department said in its letter of August 18, 1971 “the American consumer knows that raw meat and poultry are not sterile and, if handled improperly, perhaps could cause illness.” In other words, American housewives and cooks normally are not ignorant or stupid and their methods of preparing and cooking of food do not ordinarily result in salmonellosis.
The Wholesome Poultry Products Act also refers to inspections and findings that poultry products are “not adulterated”. 21 U.S.C. § 457(a). The definition of the term “adulterated” in the Act, 21 U.S.C. § 453(g), conforms to that found in the Wholesome Meat Act. The term “official inspection legend” is defined as “any symbol prescribed by regulations of the Secretary showing that an article was inspected for wholesomeness in accordance with this chapter.” 21 U.S.C. § 453(m). This differs from the definition of the term “official inspection legend” found in the Wholesome Meat Act, *335which is “any symbol prescribed by regulations of the Secretary showing that an article was inspected and passed in accordance with this chapter.” 21 U.S.C. § 601(t). We think however that the term “inspected for wholesomeness” as used in the Wholesome Poultry Products Act means “inspected and found not to be adulterated”. The term is so construed and defined by the Secretary in his regulations, 9 C.F.R. § 381.1(24) (1974), and this construction is confirmed by the House Report on the bill which became the Wholesome Poultry Products Act, Pub.L.No.90-492, 82 Stat. 791. This report evidences the intention of Congress to conform the provisions of the Wholesome Poultry Products Act to those of the Federal Meat Inspection Act, as amended. See H.R.Rep.No.1333, Apr. 30, 1968, 90th Cong., 2d Sess., in 1968 U.S.Code Cong. & Admin.News 3426, 3427, 3444 — 45. We conclude that the legend “inspected for wholesomeness” prescribed by the Secretary, conforms to the statute and is not false or misleading because of the possibility that salmonellae may be present in the poultry products inspected.
In construing both the Wholesome Meat Act and the Wholesome Poultry Products Act we are mindful that the presence of salmonellae can be detected only by microscopic examination. No one contends that Congress meant that inspections should include such examinations. We think it follows therefore that Congress did not intend the prescribed official legends to import a finding that meat and poultry products were free from salmonellae.
Both statutes provide that an article is “misbranded” if it fails to bear on its container or the inspection label “such other information as the Secretary may require ... to assure that it will not have false or misleading labeling and that the public will be informed of the manner of handling required to maintain the article in a wholesome condition.” 21 U.S.C. §§ 453(h)(12), 601(n)(12). Plainly, these provisions give the Secretary discretion to determine what labeling, if any, will be required in addition to the official inspection stamp. Although the appellants recognize this discretion in the Secretary they say he has abused his discretion in failing to require cautionary labeling. We are unable to accept this conclusion. After carefully considering the appellants’ proposals the Secretary concluded that warning labels were not the answer to the problem and that the solution was a consumer education program which the Department proposed to undertake. We cannot say that this conclusion was unreasonable; certainly we may not substitute our judgment for that of the Secretary.
The appellants rely heavily on Federation of Homemakers v. Butz, 151 U.S. App.D.C. 291, 466 F.2d 462 (1972), but we think that case is not controlling. The question there presented was whether there was a rational distinction between the labels that might be applied to two types of frankfurters. We held there was not and that a label “All Meat” when applied to one and not the other was therefore misleading and deceptive. Specifically, we held that the Secretary could not reasonably conclude that “All Meat” meant 85% meat and not 8lV2% meat and that consumers would so understand. In the case now before us the Secretary has made no discriminatory or irrational distinction between two types or species of the same product, nor is it reasonable to believe that the official labels, by misleading, will cause consumers to abandon customary methods of preparing food for the table.
The judgment is
Affirmed.