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DH= dear husband Thank you for replying. I have only found that tysabri is category c--i guess means that when they lab tested rats some abnormalities affected the fetus. No human tests. The tysabri was injected into female lab rats. I cannot find any info on what effect the male sperm would have. D...

Hello everyone I am new to the site although i have been lingering for the past few months reading the forums. I have a question maybe you could shed some light. My husband has MS and started taking tysabri he had his 4th infusion this month. He had a reaction to the infusion..chills.....and then th...