CDC Backyard Chickens & Salmonella ‘Outbreaks’: A Backyard Chicken Keeper Responds


It’s that time of year again: the yearly outbreak report on human Salmonella cases linked to live poultry.  Get ready to clutch your pearls and hide your kids!

2017 CDC Salmonella Outbreak Linked to Backyard Chickens: Multistate Outbreaks of Human Salmonella Infections Linked to Live Poultry in Backyard Flocks, 2017

When I started writing this the June 1, 2017 were the only numbers presented; as of publication, they’ve updated the numbers on July 13, 2017.

Here are the stats, straight from the CDC page:

  • Since the last update on June 1, 2017, 418 more ill people have been reported. The most recent illness began on June 20, 2017.
  • CDC, multiple states, and the U.S. Department of Agriculture’s Animal and Plant Health Inspection Service (USDA-APHIS) are investigating 10 separate multistate outbreaks of Salmonella infections in people who had contact with live poultry in backyard flocks.
    • These outbreaks are caused by several DNA fingerprints of different Salmonella bacteria: Salmonella Braenderup, Salmonella Enteritidis, Salmonella Hadar, Salmonella I 4,[5],12:i-, Salmonella Indiana, Salmonella Infantis, Salmonella Litchfield, Salmonella Mbandaka, Salmonella Muenchen, Salmonella Typhimurium.
  • The outbreak strains of Salmonella have infected a reported 790 people in 48 states and the District of Columbia.
    • Illnesses started on dates ranging from January 4, 2017 to June 20, 2017.
    • Of 580 people with available information, 174 ill people have been hospitalized. No deaths have been reported.
  • Epidemiologic, traceback, and laboratory findings link the 10 outbreaks to contact with live poultry, such as chicks and ducklings, from multiple hatcheries.
    • In interviews, 409 (74%) of 553 ill people reported contact with live poultry in the week before illness started.

Sounds pretty scary, right?  10 outbreaks?! 790 cases?  No wonder news outlets hurried to write cutting-edge stories like:

Washington Post: Backyard chickens blamed for salmonella outbreaks. Do not snuggle with them, CDC says. – June 5 2017

CNN: Getting too friendly with fowl blamed in salmonella outbreaks –  June 2 2017

IndyStar: Don’t kiss the chickens. Here’s why. – June 14 2017

CBS News: Keeping backyard chickens comes with a human health risk, CDC warns  – June 2 2017

Fox News: Backyard chickens are getting people sick again – June 6 2017

Forbes: CDC Warns: Don’t Get Too Close To Your Chickens, Ducks And Geese – June 3 2017

Time: Why You Really Shouldn’t Hug Chickens – June 7 2017


So what does this all mean?  Just how much damage are these backyard chickens doing?  Why is everyone kissing chickens?  What’s WRONG with these chicken people??

Let’s put it into context.

What Does the CDC Consider an ‘Outbreak’?

From the Salmonella Outbreak page:

When two or more people get the same illness from the same contaminated food or drink, the event is called a foodborne disease outbreak. Similarly, when two or more people get the same illness from contact with the same animal or animal environment, the event is called a zoonotic outbreak.

Simple definition of an ‘outbreak’: any time 2+ people get sick with the same illness anywhere in the US.  I should’ve been going into my last corporate job in a biohazard suit every day, ‘cuz it was basically an ongoing outbreak of whatever sickness people picked up from their kids/spouse/etc.

So, what does the “10 outbreaks’ refer to at the CDC?  10 different strains of Salmonella. Two or more people got infected per strain, making it an outbreak.

The Backyard Chicken Salmonella Outbreak Numbers, Put Into Context

The CDC website is not fun to navigate, nor are their tables of data easy to just pull and analyze.  Some of the tables don’t even have the states in alphabetical order. Still, it was worth it to satisfy my curiosity and pull the data all into one table. I only pulled data up through 2013, because 2012 was the first year they seem to have Salmonella linked to live poultry and they broke down the reporting into each Salmonella strain, which would have taken me a little too long to merge into this table. Embedded table is scroll-able, or use the link below it to navigate to the Google Sheet showing the full table.

Full size data table is on Google docs, here.

When the numbers stand on their own, it’s easy to get nervous. For instance, I live in Michigan, and was shocked to see 55 cases of Salmonella attributed to interaction with live poultry in 2016.  But what percentage of the population is that?  How much of an issue are we facing?

Of course, nobody knows how many people keep backyard chickens (even in cities with backyard chicken municipal code & licensing, there are people who keep them without reporting them). So, for giggles, I did some lazy guesswork, just to see what sort of percentages we might be looking at.

Percentage of Chicken Keeping Population in Michigan Who Became Sick With Salmonella in 2017

Let’s make some assumptions:

1.) Let’s assume that all those reported sick from live poultry are actually poultry keepers, not just people who touched or were otherwise around chickens in the 2 weeks prior to getting sick.

4695 members in the Facebook group “Chickens For Sale in Michigan”

2.) Let’s assume that the number of people who keep chickens in Michigan corresponds to the number of members in the Chickens for Sale in Michigan Facebook group, which has 4695 members today.

2017 MI Salmonella Cases # Chicken Keepers in MI
18 4695

18 is what % of 4,695?  .38%

Of course, these are pretty big assumptions, and they’re assuming on the low side.  The CDC likes to point out that many people who become infected with Salmonella will never report it, because they might just get a stomach ache & diarrhea and then get over it. Likewise, I think there are far more than 4695 people in Michigan keeping chickens; as support of my theory, I look at forums like and their Michigan Backyard Chicken Keepers thread, which is currently 3964 pages long with a total of 39,635 messages.

Regardless, maybe this 4695 is a big part of our Michigan population, and we need to be worried about those 4695 people getting sick, crippling our economy and overrunning hospitals.  How big of a threat potential is there?? Let’s look at 2016 numbers, since I can pull Michigan census data for 2016.

2016 MI Cases # Chicken Keepers in MI 2016 Pop. of MI
55 4695 9,928,300

4,695 is what % of 9,928,300? .047%

In 2016, our % of sick is actually much higher than where we are right now in 2017. However, chicken keepers, as a whole, are a TINY percentage of the overall population of Michigan, and then only a TINY percentage of them have contracted Salmonella (again, making big assumptions in all cases).

How Are People Getting Sick With Salmonella From Backyard Chickens?

It’s a good question, since it’s so easy to NOT get sick if you practice basic hygiene and use common sense.  Basically, the rule is:

Don’t put stuff in your mouth that could be unclean.

It’s a pretty easy concept.  Your mom likely drilled it into your head when you were a kid.  “Wash your hands” she’d say. “Don’t stick that in your mouth!” She’d scream. Things like that.

Basically, with chickens, you have to assume they’ve gotten in or around poo.  I assume the same thing with my dog and cat, honestly, and they get the privilege of sleeping on furniture.  If you wash your hands before sticking them in your mouth, and if you don’t go around licking surfaces in your house/yard, you should be fine.

So how are people getting Salmonella from backyard chickens?  I have some theories.  Welcome to my…

Official Guide to Getting Salmonella from Backyard Chickens

  1. Lick everything.  Always.
  2. Clean the coop with your spoon, while you’re eating breakfast.
  3. Let your chicken nest in your salad bowl.HOW-TO-GET-SALMONELLA-FROM-BACKYARD-CHICKENS-CDC
  4. Share toothbrushes with your chickens, even though they don’t have teeth.
  6. Let your chickens soak their feet in your tea after a long day of pecking and scratchin’.
  7. Touch chickens then lick your hands.HOW-TO-GET-SALMONELLA-FROM-TOUCHING-CHICKENS
  8. Drink chicken-stomped wine.
  9. Tongue bathe your chickens.HOW-TO-GET-SALMONELLA-FROM-BACKYARD-CHICKENS-CDC-2017
  10. Keep your chickens toenails short by chewing them.

Important note on ‘Kissing Chickens Causes Salmonella’

All of the above are ludicrous examples, just like insinuating that backyard chicken keepers are all getting sick from getting too ‘intimate’ with their flock, kissing and snuggling them.  There are currently 568,000 results for the search “kissing chickens” on Google- all because some remarks from the CDC on ‘kissing, hugging, and snuggling chickens’ blew up into “OMG THESE CHICKEN WEIRDOS ARE BASICALLY MAKING OUT WITH THEIR BIRDS” because that sort of headline gets clicks.  It’s dumb, and it paints backyard chickens & their keepers as unsavory, odd people- certainly not the sort of people you want living in YOUR town.

As an example of why this is such a disingenuous tagline for all the stories, here’s a snippet from the 2015 Outbreak Summary:

Twenty-eight (41%) of 69 ill people with complete questionnaires reported keeping baby poultry indoors, 39 (57%) of 69 reported holding or snuggling baby poultry, and 4 (6%) of 69 reported kissing baby poultry. These behaviors increase a person’s risk of a Salmonella infection.

Yes, you read that right: 4 people reported kissing baby poultry in 2015.  That was enough to generate high profile articles en masse published in 2015 on Google.  Ridiculous headlines get shared, and journalism suffers because of it. Articles like  “Salmonella Is Raging Because People Keep Kissing Chickens“.  The article leaves out the context of how many people are kissing their chickens, and instead focuses on it like it’s the main issue- and it’s not.  The issue is simple hygienic practices, like washing hands, removing shoes when coming into the house, and not putting your mouth on things that have touched poo (I know, I sound like a broken record). Oh, and teaching your KIDS to do that too.


How The CDC Reports Cases of Salmonella Makes It Easy For Naysayers to Fight Against the Legalization of Backyard Chickens

Here’s the crux of why I’m irritated by these yearly reports, and why I think it’s important to change the narrative on salmonella and backyard chickens:  as more people strive to work with their city to create ordinances to allow backyard chickens, the alarmist nature of these articles is easy fodder for those who staunchly want to deny backyard chickens in their city.  The way the data is being presented, not just by the CDC but also news organizations, is irresponsible and fearmongering.

Don’t think it has any impact, or that I’m being overly sensitive?  The city of Eastpointe passed a municipal code in 2017 concerning backyard chickens, allowing them with written permission from each neighbor BUT all children must be supervised while interacting with chickens.  Why?  Because they could get sick, because apparently city council believes that the citizens of Eastpointe aren’t capable of teaching their kids how to handle chickens without somehow getting chicken poo in their mouth.

During the city council sessions in Berkley MI, several people cited concerns over disease and salmonella running wild if backyard chickens were allowed.  Luckily rational thought triumphed, but the city is still doing a limited scope ‘pilot program’, just in case- despite the blatant non-issue backyard chickens have been in Ferndale, Royal Oak, Hazel Park, Madison Heights, & Lathrup Village (all surrounding communities).

Every year, I wait for the numbers from the CDC to come out around early June.  Every year, I get emails and notes to the Ferndale Backyard Chickens Facebook page, asking about the validity of the articles. And every year I say the same thing:  no, I’m not worried about Salmonella.  Don’t put poo in your mouth, wash your hands.

When I approached Ferndale back in 2008, the CDC wasn’t pushing press releases out about Salmonella and backyard chickens.  I guess the argument can be made that it wasn’t as much of an issue, since fewer people had or were interested in urban chicken keeping.  The tides of public opinion have shifted a good deal, but not so much that I’d say your average city dweller thinks backyard chickens are acceptable- and with fearmongering, click-baity articles coming out every year like clockwork, I wonder how public opinion will shift back toward disallowing urban chicken keeping.  That’s why I think it’s so crucial to keep this in perspective:  only a fraction of a percent of people are getting sick every year, and that shouldn’t be used as ammunition to keep people from being allowed to have chickens.

We, as chicken keepers, NEED to make sure the narrative isn’t one-sided. Share this article with family and friends any time they tag you on another ‘kissing chickens’ outbreak article.  Make sure they know that Salmonella isn’t transferred via air, and that basic hygiene keeps people safe.  Most of all, let them know they’re safe- this isn’t something your average chicken keeper has to fear, and it isn’t something non chicken keepers need to be concerned about.



The Best Organic Chicken Feed Choices for Your Backyard Flock

My pets eat so much better than I do.  As I’m writing this, my lunch consists of a couple spoonfuls of peanut butter and some string cheese. Don’t judge.

If you’re raising egg layers like I am and you really care about feeding them organically, I highly recommend the following brands:

Great whole grain organic non-GMO chicken feed

Scratch and Peck Feeds Naturally Free Organic Layer is a Non-GMO Project Verified and Certified Organic product. They use a blend of organic whole grains grown in the Pacific Northwest. Kind of a long drive for those of us in the Midwest, and there are NO retailers in Michigan of course.

Their Layer Feeds are designed to be the healthiest and most natural product available for your laying hens. While all of their products are soy free, their Naturally Free poultry feed line is both soy free and corn free.

Naturally Free Organic Layer contains a high amount of calcium and slightly lower protein levels than their Naturally Free Organic Grower. The calcium is used by hens to produce strong eggshells and should only be fed to birds that are laying or will lay in the near future. The grains are left naturally whole in this feed rather than highly processed into pellets.

Best for small flocks, this will get pricey fast: Organic, Naturally Free Layer Chicken Feed, 25lbs, Non-GMO Project Verified

Organic chicken feed

Kalmbach Feeds Organic Layer Feed is exceptional. Headquartered in Ohio (I know most Michiganders don’t like that, but trust me you’ll get over it), their mission is to provide the best animal feed products, quality service and value for their customers and partners- and it shows. They have a strong commitment to transparency as well as quality of ingredients . Derived from the same formula as their crumbles, this organic feed is fortified with essential amino acids and top calcium levels to produce strong shells and wholesome, tasty eggs high in Omega-3 fatty acids and Vitamin D. It contains a proprietary blend of prebiotics, probiotics and enzymes to support digestive and immune health.

Moreover, their feed contains their OmEgga® supplement, which is an extrusion of flax seed with high uptake of omega 3. It’s an easy way to make sure your hens are getting the benefits of flax in the diet (lower risk of ovarian cancer, for instance), while upping the nutrition of their eggs.

Guaranteed Analysis
Crude Protein (Min.) 17.00%
Lysine (Min.) 0.90%
Methionine (Min.) 0.40%
Crude Fat (Min.) 4.00%
Crude Fiber (Max.) 6.00%
Calcium (Ca) (Min.) 3.60%
Calcium (Ca) (Max.) 4.60%
Phosphorus (P) (Min.) 0.62%
Salt (NaCl) (Min.) 0.20%
Salt (NaCl) (Max.) 0.70%

If your feed store doesn’t carry it, get it here: Kalmbach Feeds Organic Layer Feed with Omegga, 40 lb

Non-GMO chicken feed

Hiland Naturals of Sugarcreek Ohio makes a great non-GMO chicken feed, and though I’ve never found it in a feed store, you can get it online through Amazon (with shipping included in their price!) or through their website. Their 17% layer feed is a Non-GMO Project Verified, Animal Welfare Approved product intended for layers 16 weeks and older. The slightly lower protein levels and high calcium levels maintain health and provide the birds with the ability to produce strong eggshells. The feed is a blend of non-GMO grains, all natural vitamin-mineral supplement designed specifically for poultry, and direct-fed microbials to keep your birds healthy while promoting production. Their layer feed is Non-GMO Project Verified, Animal Welfare Approved, tested free of herbicides, pesticides, and mycotoxins aflatoxin and deoxynivalenol, and preservative free.

Sea kelp supplement for chickens

Supplementing your feed with sea kelp is a smart way ensure your chickens are getting all the right nutrients to keep them in their prime. By adding sea kelp to your flock’s diet, you have the opportunity to improve their nutrition, boost their immune response and promote egg laying. Some also agree that feeding the flock sea kelp also helps to extend the life of the flock .

Vitamins include A, B1, B6, (NIACIN), B9 (Folate), B12, D, E, and K.

Kelp has very high levels of vitamin K. Vitamin K is necessary for blood clotting and bone health. Kelp also contains high levels of folate, iron, iodine and calcium. The amount of calcium in one serving of sea kelp is ten times the amount found in a glass of milk. As you already know, laying hens require both calcium and Vitamin D to make strong eggshells.

Kelp contains moderate levels of vitamin A, E, C, thiamin, riboflavin, niacin and pantothenic acid.

It also includes important trace minerals–phosphorus, zinc, copper, manganese and selenium as well as lower levels of leucine, lysine, phenylalanine, tyrosine and histidine.

Potential Dietary Benefits

  • Stronger eggshells
  • Immune system support
  • Strong bones and maintenance of bone health
  • Bright deep golden color egg yolks
  • Improved plumage- gloss and decrease in feather breakage

Get a small bag here:  Treats for Chickens Certified Organic Cluck’n Sea Kelp, 2-Pound, Vitamin Supplement

Or the large bucket: Treats for Chickens Certified Organic Sea Kelp 6 lb bucket