Notice: Religion is Christianity! Hi again. I know some tips of having prayers come true such as having faith with God, praying every moment, doing good deeds, but what else can I do? Thank you earthlings!

What link in the chain of transmission is described in the paragraph? sarah has been eating and sleeping poorly. she was just diagnosed with pneumonia. tests showed the illness was caused by streptococcus pneumoniae. in the chain of transmission, sarah is the (blank) , and streptococcus pneumonia is the (blank).