Restaurant investors have been reminded twice this summer that a food-safety scare can erase months of gains in a matter of days. Chipotle Mexican Grill was caught up in a salmonella outbreak tied to jalapeños, while Yum! Brands' Taco Bell was linked to a much larger cyclospora outbreak involving iceberg lettuce.

Both stocks have been punished. Yet the episodes look more like temporary supply-chain shocks than the kind of brand crisis that devastated Chipotle a decade ago. Both companies entered the food-safety scares with improving businesses, and Wall Street remains high on them. That makes Chipotle and Yum! shares interesting at current prices.

To be sure, the recent outbreaks have hurt foot traffic at affected chains. According to Placer.ai, Taco Bell visits were nearly 20% below 2026's normal levels during the weeks from July 13 to July 27, while Chipotle's traffic was down 7% from normal levels on July 17-even though the chain wasn't implicated in the lettuce outbreak.

Investors reacted quickly. Chipotle shares dropped nearly 10% on Aug. 4, when its connection to the jalapeño investigation became public, while Yum shares lost 8.5% during the week when Taco Bell became the focus of the cyclospora probe. Both stocks have since stayed around those levels.

The selloffs are notable because both companies had just posted strong quarterly results. Chipotle's revenue rose 9.3% in the second quarter, while comparable sales increased 2.2%. That was an acceleration from 0.5% growth in the first quarter. The company also raised its full-year outlook, although margins slipped because of higher beef, freight, and labor costs.

Yum's results were stronger still. Taco Bell led the way, with global same-store sales rising 7% and system sales up 9%. KFC posted 2% same-store-sales growth and 6% system-sales growth. Pizza Hut remained the laggard, but Yum has agreed to sell the business for about $2.7 billion. Yum's adjusted earnings rose 12% in the second quarter.

Food-safety fears clearly disrupted that momentum, but early evidence suggests the worst of the initial customer pullback may already have passed.

On Yum's July 30 earnings call, management said Taco Bell's U.S. same-store sales were down 2% quarter-to-date after the outbreak. Management added that consumer sentiment was improving and sales declines had moderated. Although visits to Taco Bell were still 8% below the 2026 average during the week from Aug. 3 to Aug. 10, it is a substantial recovery from the 20% shortfall two weeks earlier, according to Placer.ai.

Chipotle said on its July 29 earnings call that the cyclospora scare had reduced late-July sales trends by two percentage points even though the company isn't linked to the outbreak. Management hasn't quantified the impact of the salmonella connection yet. But Placer.ai data suggest that traffic for the week from Aug. 3 to Aug. 10 was actually 3% above the 2026 average.

Investors still remember the scars from Chipotle's 2015 food-safety crisis. The stock ultimately lost roughly half its value during the prolonged fallout and didn't surpass its pre-crisis 2015 high until July 2019-nearly four years later. That doesn't mean the same thing will happen this time.

In 2015, E. coli cases appeared at Chipotle restaurants across numerous states, investigators couldn't identify the contaminated ingredient, and another norovirus outbreak followed in December. The uncertainty undermined confidence in the chain's broader food-safety controls, and severely damaged customer perceptions of the chain and sales throughout 2016.

In contrast, the salmonella outbreak appears to be a contained supplier incident rather than a problem unique to Chipotle's food-handling practices. Regulators have identified an outside supplier and a specific ingredient, and Chipotle replaced the peppers before its connection became national news. That provides a clear endpoint that the 2015 crisis lacked.

Wall Street appears to see the distinction. Of analysts tracked by FactSet, more than 70% rate Chipotle stock as Buy or Overweight, with an average price target of $44, roughly 29% above Wednesday's close. Yum has a Hold consensus, but its average target of $175 also implies about 21% upside.

TD Cowen's Andrew Charles doesn't see the salmonella episode as a lasting brand problem for Chipotle. "We argue that the small, contained impact and health reports that Chipotle is safe to eat will not dent 2027 average unit volumes," he wrote in a research note in early August, noting that recent food-safety incidents have proven to have a short-term impact, likely due to consumers' shortened attention spans on social media.

William Blair analyst Sharon Zackfia also argued the episode doesn't reflect a breakdown in Chipotle's health and safety protocols. "History has repeatedly shown that the sales impact of foodborne illness tends to be fleeting for restaurants," she wrote, emphasizing her confidence in the chain's other growth drivers such as menu innovation and the relaunch of its rewards program.

For Taco Bell, Charles expects the cyclospora outbreak to drag same-store sales to a 3% year-over-year decline this quarter before they return to 3% growth in the fourth quarter. He has kept the Buy rating for Yum stock and $180 price target, expecting Taco Bell's prior momentum to return once the publicity fades.

Food-safety scares are frightening because investors can't predict them. But for Chipotle and Yum, their travails appear short-lived, and they offer a buying opportunity for investors.