Im sad :( i asked a question for 80 points but nobody answered it and i dont get points back.
by the time someone answers it, i already did the work

:(

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).