If you make or sell raw-milk cheese, you already know the number: 60 days at 35 degrees Fahrenheit or above, and the wheel is legal to sell. What's changed this fall is that new research funded by a federal food-safety regulator and a state agriculture lab has started asking whether that number still does what it was built to do. A study released in October found that a virus causing highly pathogenic avian influenza can stay infectious in raw milk cheese well past the 60-day mark, with slow decay continuing out to 120 days in some samples. Acidifying the milk before cheesemaking cut infectious virus levels fast. Time by itself did not.
The same month brought a separate reminder that aging windows aren't the only variable worth watching: a cluster of E. coli illnesses in the Pacific Northwest was traced back to an aged raw-milk cheese, a reminder that the 60-day standard was built around a narrower set of pathogens than the ones our members are now being asked to think about.
We want to be careful here, because this is exactly the kind of story that gets flattened into a headline that scares people away from cheese entirely. That's not what the research says, and it's not what we're telling members. What it says is narrower and, honestly, more useful: a rule written for one set of risks doesn't automatically cover a new one, and the agencies that oversee food safety are going to look hard at whether the 60-day standard needs updating for how the industry has changed since it was set.
What the Food Safety Committee is watching
Our Food Safety Committee, chaired this term by longtime member Gwen Whitfield, has flagged this as a topic worth tracking closely rather than reacting to. Any change to the aging requirement would ripple through every raw-milk maker in the federation, from farmstead producers running a single small cave to distributors managing inventory that's already aging on a clock. A tighter standard, a required testing step, or a narrower list of eligible milk sources are all plausible outcomes, and none of them are decided yet.
If a formal comment period opens, we'll tell members exactly when and how to weigh in, the same way we did with last month's labeling standards proposal. In the meantime, the advice we're giving is unglamorous but sound: know your herd's health status, keep your pH and time-temperature logs current, and don't assume that because a wheel cleared 60 days it cleared every risk that matters this year. A pH log that's tight and dated is worth more in a conversation with an inspector than a general sense that "we've always done it this way."
What this isn't
This isn't a recall notice, and it isn't a reason to pull raw-milk product off your shelves. It also isn't a fight between raw-milk producers and the regulator — several of our raw-milk members have told us they'd rather have a rule that actually reflects current risk than one that's decades old and untested against a threat nobody anticipated when it was written. The frustration we're hearing is less about the science and more about timing: members don't want to relearn their compliance calendar twice in one year on top of everything else 2025 has asked of them.
If your operation handles raw milk in any form, our Food Safety & HACCP Certificate covers exactly this kind of regulatory-change literacy — reading a proposed rule, understanding what it would actually require on your floor, and building a response before the comment period closes rather than after. It's a two-hour investment that pays for itself the first time a rule like this one moves.
We'll have more to say once there's an actual proposal on the table. Until then, keep your logs current and reach out to the Food Safety Committee if your cave setup raises questions the general guidance doesn't answer.
The International Cheese Federation (ICF) and More Cheese are entirely fictional. This post is demonstration content created for MemberJunction. All people, organizations, events, courses, certifications, figures, and quotations in it are invented, and nothing here represents a real association, a real business, a real person, or real professional advice.