A family was close to hiring a live-in nanny they really liked — experienced, kind, bilingual, and referred through a trusted source. But when her immunization and health records came back, her TB (tuberculosis) blood test showed a positive result.
The clinic followed up with a chest X-ray, which came back clear, and officially cleared her for work.
Still, the family grew uneasy. They didn’t fully understand what the positive test meant — and eventually, they rejected the candidate.
Let’s Talk About What a TB Blood Test Actually Means
There are two main types of TB tests: the tuberculin skin test (TST) and the TB blood test (also called IGRA, or interferon-gamma release assay). If someone tests positive, it doesn’t mean they are actively sick or contagious.
It typically means the person has latent TB infection (LTBI). According to the Centers for Disease Control and Prevention (CDC):
“People with latent TB infection are not infectious. They cannot spread TB bacteria to others.”
— CDC, Latent TB Infection
In fact, many people who were born or lived outside the U.S. have latent TB simply because they were exposed at some point — especially in countries where TB is more common.
What Happens After a Positive TB Test?
The standard next step after a positive TB test is a chest X-ray to check for any signs of active TB disease. If the X-ray is normal and shows no signs of active infection, the person is usually considered medically cleared and safe to work — particularly if they have no symptoms (coughing, fever, night sweats, etc.).
In our client’s case, the caregiver’s X-ray was clear and she was medically cleared by the clinic. That means she is not contagious, and there is no risk to the family or children.
Why This Happens More Often Than You Think
This isn’t an uncommon scenario. Many foreign-born caregivers, particularly those from countries in Asia, Africa, or Latin America, may test positive for latent TB. According to the World Health Organization, over a quarter of the world’s population carries latent TB, but the vast majority never develop active disease.
In California, for example, schools and child care facilities often accept TB blood test results paired with a clear X-ray as part of employment requirements. The California Department of Public Health states:
“Persons with a positive TB test and a negative chest X-ray are not contagious and are considered safe to work.”
So… Is It Safe to Hire Someone with a Positive TB Blood Test but a Clear X-ray?
Yes. Medically, they are not contagious, and they have likely carried the latent form for years without issue.
This is not the same as having active tuberculosis — which would come with symptoms and a very different health protocol. Caregivers with active TB are not cleared to work and would be flagged immediately by the clinic.
But Comfort Matters, Too
Even with medical facts and clinic clearance, we understand that some families might still feel uncomfortable. That’s okay. Choosing someone to live in your home and care for your children is deeply personal.
At AyiConnect, we believe in two truths:
- Caregivers with positive TB blood tests and clear X-rays are safe to hire and meet professional health standards.
- Families are entitled to make choices that align with their comfort level and values.
We encourage open conversations, evidence-based understanding, and respectful decisions — on both sides.
Stay Informed, Stay Respectful
A positive TB blood test is not the red flag many assume it is. When followed up with a clear X-ray and medical clearance, it’s simply a common, manageable finding, especially among foreign-born workers.
If you're reviewing a caregiver's immunization records and come across something unfamiliar, don't panic — ask questions, consult the clinic, or speak to your hiring support team. We’re here to help interpret and guide.
And remember — compassion and clarity go hand in hand.
AyiConnect is a platform to connect families with helpers who have a language specialty in addition to care. You can post a free job to engage with them through self-service or use concierge service. For self-service, you can even join in the discussion. The concierge service can provide another option to ensure successful matches for busy families who don't have time to search or need language assistance. Schedule a free consultation here for our concierge service, or check us out at ayiconnection.com
