effectiveness wears off but also antibodies wear off. why aren t they allowing us to text the antibodies on our members and using that as a level to get tested. brian: they told you are vaccinated. for the unvaccinated there is a testing option. you are okay with that. we would love to keep a testing option. brian: you would love to see an antibody test. absolutely. the department has been giving antibody test since last year. they already have antibody information on a lot of our members. at this particular time refusing to use as it a method. brian: vaccinated more likely not going to get sick and spread the vice to the vaccinated and unvaccinated what do you say to that. right now we find probably half of our members currently sick are vaccinated. other half that are unvaccinated. i was i my wife. my wife got sick. five days later we got sick. we were vaccinated and had mild symptoms. again, i have have not talked to a single firefighter been sick a second time had bad
l.a. with this. what a mystery and how frightening for these families. what are the doctors saying? reporter: doctors do not know what is causing the illness. they suspect some polio-like virus. the symptoms hit suddenly and effects are serious. this illness has parents calling doctors asking about system symptoms. neurologists notice a drastic can change in their s motor abilities and however because the cases are so rare, the causes unknown, treatment now is limited. this extremely rare but, in the event that you ever notice sudden onset of weakness in your child persists more than a few minutes, we always would advise you to seek medical care urgently. reporter: experts began looking into this illness about 18 months ago. they have 25 cases. average age is 12. almost all of those are in california. martha?