@marknmt
No more than an inch or so diameter branches break off easily. Even big ones I break off and clean up later with a saw if I see no more infection. If your using pruners the bad thing is to disinfect them takes alcohol or bleach which is not overly good for the pruners and usually people dip between cuts which sometimes leaves fireblight on the pruners reinfecting the tree they are trying to save in a lower spot than the infection was previously. As we are all to painfully aware at times pear branches break off easily.
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