Two sprout investigations are open in the same season, and they are not the same outbreak. One is Salmonella Bovismorbificans linked to broccoli sprouts. The other is a mixed alfalfa-sprout investigation involving more than one Shiga toxin-producing E. coli strain and Salmonella Agona, including people infected with both. A third, narrower fact sits beside them: an alfalfa sprouting-seed recall tied by traceback to sprouts in a multistate investigation, with one illness reported to the company. Collapsing those into a single "sprout outbreak" would make every number in this piece false.
The broccoli investigation is new to the desk today. The alfalfa seed recall was already there, and the earlier explainer One Illness, a 45-State Seed Recall is about that recall's distribution, not about a 55-person case count. Today's Global Signal Scan keeps the records separate. So does this piece.
The broccoli outbreak is one pathogen, six states, and a sequencing match
CDC reports 32 Salmonella Bovismorbificans illnesses across six states, with 3 hospitalizations and no deaths. Of 27 people interviewed, 26 ate sprouts or microgreens, and 22 ate broccoli sprouts. FDA reports that product samples matched the outbreak strain by whole-genome sequencing. Evergreen Fresh Sprouts products were sold in Idaho, Montana, and Washington and may have moved farther. The products are past their expiration dates. The investigation is not closed.
That interview fraction is strong and still not universal. Twenty-six of twenty-seven is not twenty-seven of twenty-seven, and 22 broccoli-sprout exposures are not 32. Sequencing that matches product to the outbreak strain is evidence about those samples. It is not, by itself, a map of every case back to one package in one kitchen.
The alfalfa investigation is a different outbreak, with more than one pathogen
The mixed alfalfa outbreak is a separate event: 55 illnesses across 15 states. The pathogen mix is the reason it cannot be folded into the broccoli total. Forty-six people had E. coli, seven had Salmonella, and two had both. The Salmonella in that investigation is Salmonella Agona, not Salmonella Bovismorbificans. Four people were hospitalized. No deaths have been reported. Multiple Shiga toxin-producing E. coli strains are part of the same investigation, which is another reason a single-strain headline would be wrong.
The alfalfa sprouting-seed recall already on the desk is a related supply-chain fact, not a restatement of those 55 illnesses. FDA's Berlin Seeds notice describes a recall of alfalfa sprouting seed after supplier traceback linked the seed to sprouts in a multistate investigation, and one illness reported directly to the company. That notice is the source for the recall. It is not the source for the 55-case split above. The standing recall record is the alfalfa sprouting-seed signal. The broccoli record is separate: broccoli sprouts Salmonella.
Why sprouts keep producing difficult investigations
Sprouts are a difficult food for a reason that is biological before it is bureaucratic. The same warm, moist conditions that make a seed sprout also amplify bacteria that were on or in the seed. The product is often eaten raw, so a later cooking step never reduces the load. And the contamination people encounter at a grocery store or a restaurant may have started upstream, in a seed lot, before any grower watered a tray.
That is why traceback in the alfalfa investigation matters more than a brand name. A common seed lot was traced to multiple growers and wholesalers. Distribution of that lot was reported across 16 states and Puerto Rico, and onward to Canada, Mexico, Tahiti, and Venezuela. A retail brand associated with the sprouts was sold in 45 states. Those are supply-chain facts. They are not case counts.
Forty-five states is distribution, not illness
The number 45 is the one most likely to be misread, because it is larger than 15 and it sounds like an epidemic. It is not. Forty-five states describes where a retail brand was sold. Fifteen states describes where the 55 alfalfa-investigation illnesses were reported. Six states describes where the 32 broccoli-investigation illnesses were reported. Idaho, Montana, and Washington describes where Evergreen Fresh Sprouts products were sold, with the explicit caveat that product may have moved farther. None of these geographic figures can be added together. They count different things.
Sequencing connects clues. It does not replace traceback
Whole-genome sequencing is why investigators can say a product sample matches an outbreak strain rather than merely sharing a species name. That is a real advance, and it is doing real work in the broccoli investigation. It does not replace traceback. Sequencing can connect a sample to a cluster. It cannot, alone, tell you which grower received which seed lot, which wholesaler shipped which tray, or which restaurant served which brand. Those are document questions. A foodborne investigation that stops at a genetic match has a clue, not a supply chain.
Expiration is not closure
The broccoli products are past their expiration dates. That reduces the chance that a shopper buys a fresh package tomorrow. It does not close the investigation, and it does not prove that every package was discarded, that no one froze product, or that the seed lot behind a future tray has been fully traced. FDA and CDC have left the broccoli investigation open. An expiration date is a product fact. Closure is an institutional decision, and it has not been made.
Read each number by its unit
- 32 — broccoli investigation illnesses, Salmonella Bovismorbificans, six states. Not the alfalfa total.
- 3 — hospitalizations in the broccoli investigation. 0 deaths.
- 26 of 27 — interviewed people in the broccoli investigation who ate sprouts or microgreens. 22 of those ate broccoli sprouts.
- 55 — mixed alfalfa investigation illnesses, 15 states. Not a distribution footprint.
- 46 / 7 / 2 — alfalfa investigation illnesses with E. coli, Salmonella Agona, or both. 4 hospitalized, 0 deaths.
- 45 states — retail-brand distribution, not illnesses. 16 states and Puerto Rico, plus Canada, Mexico, Tahiti, and Venezuela — reported seed-lot distribution, not illnesses.
- 1 — illness reported directly to the company in the Berlin Seeds alfalfa sprouting-seed recall. Not the 55.
The shared problem is upstream
The pathogens differ. The case counts differ. The states differ. What the two outbreaks share is a production system in which a contaminated seed can become many trays of raw food before anyone is ill enough to be interviewed. Traceability that starts at the grocery store will always arrive late. Traceability that can name the seed lot, the growers who received it, and the wholesalers who moved it is the control that matches the hazard. Until that chain is routine, sprout investigations will keep looking like a series of unrelated brand recalls when they are often one upstream problem wearing different labels. Both records, and the signals that did not change today, are on the Global Signal Desk.
What is fact
- CDC and FDA describe a broccoli-sprout Salmonella Bovismorbificans outbreak: 32 illnesses, six states, 3 hospitalizations, 0 deaths, a 26-of-27 sprout or microgreen exposure among people interviewed, 22 broccoli-sprout exposures, and product samples matching the outbreak strain by whole-genome sequencing.
- The mixed alfalfa investigation is a separate event: 55 illnesses in 15 states, multiple STEC strains and Salmonella Agona, 46 E. coli, 7 Salmonella, 2 both, 4 hospitalizations, 0 deaths.
- A common alfalfa seed lot was traced to multiple growers and wholesalers, with reported distribution across 16 states and Puerto Rico and to Canada, Mexico, Tahiti, and Venezuela. A retail brand was sold in 45 states. That 45 is distribution.
- The Berlin Seeds recall on the desk is a seed recall linked by traceback to a multistate sprout investigation, with one illness reported to the company. It is not the 55-case count.
What remains uncertain
- Whether product that moved beyond Idaho, Montana, and Washington accounts for any of the six-state broccoli case total.
- Whether other firms beyond those already named received the implicated alfalfa seed lot.
- Whether every package past its expiration date is actually out of kitchens, freezers, and food-service inventory.
- Which of the 55 alfalfa illnesses, if any, are explained by the specific Berlin Seeds lot. The recall notice does not establish that.
Analysis
The unit is the whole analysis. Illnesses, hospitalizations, interview denominators, distribution states, and seed-lot destinations answer different questions. Add them and the supply chain disappears. Keep them separate and the shared problem is obvious: the hazard is upstream of the brand, in seed that becomes raw food.
About this byline
Dex Mercer is a recurring Today in Public Health editorial pen-name for numbers-first analysis. Dex Mercer is not a real employee and not an independent person. This article is AI-assisted, edited under Elijah St. John's oversight, and grounded in the sources below.