Do I have grounds to sue my landlord for negligence regarding lead paint poisoning?

Question Details: My 15 month old daughter was diagnosed with lead poisoning and the lead poison control authority sent an inspector to my home to locate the source of the problem. She isolated it to the peeling /flaking paint around the windows having been ingested. She notified my landlord of his responsibility to fix. He painted over the peeling paint on the windows in 1 room and said he'd return for the other windows almost 6 months ago. Since then he has made no attempts to follow-up on those other windows and the ones he painted over are already peeling again. I just moved out, however, I took pictures of the windows in question. Do I have a valid complaint for his negligence for her exposure to further injury? Important Notice