Vident Partners provides vetted allergy and immunology expert witnesses for cases involving fatal and near-fatal anaphylaxis, delayed epinephrine administration, undeclared food allergens and cross-contact, drug allergy and penicillin labeling errors, allergen immunotherapy reactions, and school and restaurant food allergy liability. Request a referral today.
Find a Allergy & Immunology Expert →Overview
Allergy and immunology cases are usually about minutes. Anaphylaxis has a lifetime prevalence estimated at 1% to 3% of the world population and is increasing, and roughly half of anaphylaxis-related fatalities occur within the first hour 1. The core clinical proposition an expert defends or attacks is simple and well settled: intramuscular epinephrine is first-line, there is no absolute contraindication to epinephrine in anaphylaxis, and repeat studies have shown that providers often wait too long before giving it 1. Where a defendant gave antihistamines, gave corticosteroids, gave nothing, or gave epinephrine subcutaneously or by the wrong route, that delay is generally the case.
Food allergy litigation runs on a federal labeling framework that experts must be able to explain precisely. Congress passed the Food Allergen Labeling and Consumer Protection Act of 2004, which identified eight major food allergens: milk, eggs, fish, Crustacean shellfish, tree nuts, peanuts, wheat, and soybeans 2. The Food Allergy Safety, Treatment, Education, and Research (FASTER) Act, signed April 23, 2021, declared sesame the ninth major food allergen, effective January 1, 2023 2. A food is misbranded under the Federal Food, Drug, and Cosmetic Act if its labeling is false or misleading or if required allergen information is omitted 3. In practice, the litigated question is usually cross-contact — the inadvertent introduction of a major food allergen into a product — and whether the manufacturer implemented allergen and labeling controls to prevent undeclared allergens during manufacturing and packaging 2. Note the date sensitivity: a sesame claim arising before January 1, 2023 sits under a different labeling regime than one arising after.
Certification is conferred by the American Board of Allergy and Immunology, a conjoint board of the American Board of Internal Medicine and the American Board of Pediatrics, so a qualified expert has completed a primary residency in internal medicine or pediatrics before fellowship 4. For the clinical management questions the National Institute of Allergy and Infectious Diseases food allergy guidelines and the practice parameters maintained by the specialty societies supply the benchmark 56. One practical point that recurs: biphasic reactions occur in up to 20% of anaphylaxis cases with symptom recurrence peaking 8 to 11 hours after the initial reaction, though clinically significant in 4% to 5% of patients — which is why premature discharge from an emergency department, rather than the initial treatment, is sometimes the actual breach 1.
There is no absolute contraindication to epinephrine in anaphylaxis, and roughly half of anaphylaxis-related fatalities occur within the first hour — yet repeat studies show that providers often wait too long before administering it.
Case Types
Fatal or near-fatal anaphylaxis following delayed or omitted intramuscular epinephrine
Undeclared allergen and allergen cross-contact claims against food manufacturers and retailers
Restaurant service claims involving misrepresented ingredients or ignored allergy disclosures
School, camp, and childcare failures to follow an allergy action plan or provide stock epinephrine
Allergen immunotherapy dosing errors and inadequate post-injection observation
Perioperative, contrast, and antibiotic anaphylaxis in healthcare settings
Harm attributed to an unverified penicillin allergy label and resulting antibiotic selection
Premature emergency department discharge preceding a biphasic reaction
Qualifications
Related Specialties
FAQ
The expert should be certified by the American Board of Allergy and Immunology, which requires prior certification in Internal Medicine or Pediatrics, and should be actively treating anaphylaxis and food or drug allergy. In product cases, add working knowledge of the FALCPA and FASTER Act labeling framework and of allergen preventive controls in manufacturing — clinical credentials alone will not carry a mislabeling claim.
These experts are retained in fatal and near-fatal anaphylaxis claims, undeclared allergen and cross-contact product cases, restaurant and school food allergy litigation, immunotherapy dosing errors, perioperative and drug-induced anaphylaxis, and occupational sensitization claims.
It is the most common allegation and the hardest to defend. The literature is consistent that intramuscular epinephrine is first-line, that there is no absolute contraindication to its use in anaphylaxis, and that clinicians frequently delay. Defenses generally turn not on whether epinephrine should have been given but on whether the presentation was recognizable as anaphylaxis at the time — which is why the documented symptom sequence, vital signs, and timing entries are the center of these cases.
They define the nine major food allergens that must be declared — milk, eggs, fish, Crustacean shellfish, tree nuts, peanuts, wheat, soybeans, and sesame — and they make a product misbranded when that information is false, misleading, or omitted. Timing matters: sesame became the ninth major allergen only as of January 1, 2023, so a claim arising earlier is analyzed under the eight-allergen FALCPA framework. Most litigated cases involve cross-contact during manufacturing rather than a wholly absent label.
Biphasic anaphylaxis. Reactions recur in up to 20% of cases with symptoms peaking 8 to 11 hours after the initial reaction, though only 4% to 5% of patients experience a clinically significant biphasic response. Because of this, observation after treatment — and longer observation for patients with severe or biphasic reaction history, beta-blocker use, older age, or poor healthcare access — is a distinct standard-of-care question separate from the adequacy of the initial treatment.
In general, expert fees are determined by the expert themselves, based on a variety of criteria. Among those criteria are professional experience, forensic and testimony experience, relevant certifications, case-type specialization, and publications. Vident does have some influence over expert fees by comparing experts within a specialty, but ultimately it is a personal decision by the expert.
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