Some other points that I am taking into consideration (the bolding is my own):

PPD Interpretation

• Winthrop uses greater than or equal to 10 mm of induration as the cutoff for latent TB infection (LTBI)



• According to the Redbook 1997 this category is designed for children living in high-prevalence regions of the world



• 5 mm cutoff is used by a few experts

Infants and young children are more likely than older children and adults to develop life-threatening forms of TB

We also need to strongly consider the toxicity of the preventative treatment. The treatment of isoniazid prophylaxis is a nine month long treatment that requires testing of liver functions. The Orphan Doctor site says:

Risk of INH hepatitis is very small in infants, children and adolescents (O’Brien et al. Pediatrics 1961; Stein et al. Pediatrics 1979)

My next step is to have my husband look over all the information and see what his opinion is. I know that we don't have to make a decision right now. In our doctor's eyes, there isn't even a decision to be made. I just want to be sure that we're doing the right thing to ensure Ella's health, now and in the future.

If you have any stories/information/advice, please share-I'd love to hear it :)