Screw worm confirmed

All of my screwworm cases in Guatemala have been calf-related. With screwworm, you literally have to inspect calves every day. Navels, ear tag sites, and any other wounds should be checked daily Early detection is critical, as a minor wound can become a serious infestation very quickly. Fortunately, I haven’t had one die on me yet, which I attribute to catching and treating them early. Had a few last year March 2025 this year we had 4 so far.


This needs to be looked at from the real world of screwworm infestation. Being diligent seems to be the key. Fresh navels and open wounds are the key routes of entry.
 
I am dumb on this subject but will this change how you manage calves? Like castrating or banding bull calves, dehorning calves, or even applying ear tags?
The only change would be taking a can of screw worm spray, and coating the wound with i,t if you cut or dehorn in warm enough weather for flies. . Wouldn't even add a minute to the time per abimal.
 
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The only change would be taking a can of screw worm spray, and coating the wound with i, if yopu cut or dehorn in warm enough weather for flies. . Wouldn't even add a minute to the time per abimal.
My thought is that it is rare in the area where the screw worm has been documented that its not weather for flies.
 
I believe Dectomax is the most effective against the NWSW. I've used Dectomax in the past but it's been years ago. It would be nice if Ivermectin was the preventive. Ivermectin is cheap and readily available. We keep plenty on hand and worm the cows twice a year with it already.
We’ve had excellent results using Curabicheras Ag Plata, which unfortunately isn’t available in the U.S. It helps kill larvae, disinfect wounds, promote healing, and protect wounds from flies. We also use Dectomax (doramectin), which provides about 3 weeks of protection and helps kill larvae feeding deeper in the tissue that topical products may not reach. For those in the U.S., Catron IV is probably the closest product I’ve found. Most importantly, inspect calves daily—especially navels, ear tags, and any fresh wounds.

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I am dumb on this subject but will this change how you manage calves? Like castrating or banding bull calves, dehorning calves, or even applying ear tags?
We are debating that right now and how bad it gets and price will determine if it's worth it.

Looks like prices are up this week.
 
We are debating that right now and how bad it gets and price will determine if it's worth it.

Looks like prices are up this week.
I realize that your outside the quarantine area but im guessing it will effect the prices in your area soon also. Is there someone at the stockyards that are looking for screw worms even though you are outside the area.
Kentucky and Tennessee have already put restrictions on animals coming from Texas. Not lots of cattle come east but they are going to have to be inspected and lots of paperwork with them.
 
The highland lakes daily trib (burnet Llano county's) reports today that one of these things has been found in a goat in neighboring Gillespie county'. Not south Texas, but middle of the hill country. I did a screenshot as it won't let you open without a subscription. View attachment 68607
Im afraid this deal is going to be like hogs. Its not IF... its when.

There is no ogistica wayl to keep the lid on this until the sterile flies get released. It literally a race against time and you can maybe spend some dollars here and there to buy time.
 
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There’s an area of interest that the National Hurricanes Center has identified in the gulf of America that has the chance of pulling TS Christine from the Pacific then travel up the coast. Is there any historical data showing the spread of flies by tropical systems? I’m concerned, but unsure if it’s a valid concern.
 
Once you get west of the Mississippi, where pastures are thousands of acres, regenerative ranchers can check all of
How will having cattle bunched up help with screw worms?

Which is easier? Riding around several pastures ranging from 1,200 to 12,000 acres of brush trying to find them all or having them all in one easy to find group?
 
Once you get west of the Mississippi, where pastures are thousands of acres, regenerative ranchers can check all of


Which is easier? Riding around several pastures ranging from 1,200 to 12,000 acres of brush trying to find them all or having them all in one easy to find group?
Detection would be easier not prevention. I would think if 250 hd were scattered over a large area a smaller number of cattle would be exposed to an outbreak. If 250 hd are all together in a rotational grazing setting and you have an outbreak more cattle are likely to be exposed. Doesn't the NWSW have a 30 mile range before it dies?
 
Sid Miller said they should use the SWASS (Screw Worm Adult Suppression System) that was used back in the 70s to eradicate them. He thinks the sterile flies are not the answer. He said the feds are dragging their feet and he’s going to move forward without them. We will see…hopefully something gets done soon!
 
I think no possible solution should be left off the table (except those that cause greater harm) but with the back & forth of the talking heads in regards to getting domestic production of sterile flies online & SWASS traps, it all feels inadequate & untrustworthy at this point.

Luckily there are pesticides on the market to bridge the time gap between now and when they’re pushed back south of Panama.

I don’t see a reason not to make them extinct.
 
Sid Miller said they should use the SWASS (Screw Worm Adult Suppression System) that was used back in the 70s to eradicate them. He thinks the sterile flies are not the answer. He said the feds are dragging their feet and he’s going to move forward without them. We will see…hopefully something gets done soon!
Hadn't heard of the SWASS so I googled it. Got some interesting answers that weren't screw worm related (a head's up here). I did get the answer I was looking for as well though. This article is somewhat 'grandstanding', although it does explain what SWASS is and does make valid points. The content reads as if presented by a politician and the content from a PhD expert.
 

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