Are dogs at shelters tested for diseases?

I am thinking about adopting a dog from an animal shelter, and I was wondering do those shelters usually test dogs for diseases that could be transmitted to humans, or things that could cause the dog health problems?

the dogs are not ussually tested.. no.The dogs are held for the 3 day stray hold. If the dog has a bite history it may be quarantined for 10 days before being put down.Shelters have very little funding, and they cant afford to test each dog. There's not many common diseases that are transmitted to humans anyways,.. rabies, lepto and ringworm.. most dogs are vaccinated for rabies and lepto anyways.

I wish I could tell you...good question! If I were you, I would call the shelter directly and ask. Otherwise look it up online and find out regarding safety/health rules and conditions shelters SHOULD have. Then you can try testing out the shelter you have your mind on.

where I live no htey don't and they are often having to put dogs down due to parvo and if you get one that dies of parvo you shouldn't get another DOG that has been fully vaccinated for 6 months to a year

Both rescues and shelters routinely worm dogs, check for heartworm infestation and give all needed shots except rabies which in many states HAS to be given by a licensed vet. Few diseases are comunicable to people, ringworm and some worms but if you worm a dog that takes care of the worms and monthly heartworm preventative contains wormers. Ringworm is a fungual infection and you can not test for it. Most shelters do not do any extensive health screenings, if an animal is sick they put it to sleep. Some rescues do but it is an expensive undertaking and most rescues can not afford to put a lot of $$ on one dog when they need that $$ for healthy dogs for routine vet care. It costs around $200 for neutering/shots so if they spend $2,000 on 1 rescue that needs lots of care then 10 dogs die because they do not have the funds to take care of them. I have routinely pulled dogs from shelters for our rescues and adopted 3 for myself and none have had major problems. One should always take a new dog, no matter where it came from, to a vet within a few days for a health checkup.

It depends on the shelter. Some will do testing for common diseases and only adopt dogs that are healthy. Others will try to adopt any dog that doesn't show signs of disease. If a dog looks sick, most shelters will try to find out what it is and treat it if they can. Shelters do not have the time, money or resources to test every dog for every disease. If a dog does have a health problem that the shelter knows about, they should be upfront about it. They generally don't provide lots of support after you adopt the dog for health problems. If a dog appears sick, and could transmit to other animals, it probably won't be put up for adoption

ya why do you think they cost so much

The shelter in my area does not.