My eldest sister D ( who we don't see ) had whopping cough .. My other sister M, went and saw her yesterday , she had had her whopping cough needle 3 years ago when DD1 was born ..
My eldest sister has been on antibiotics for 5 days ..

DD2 is 11 weeks old now and has only had one shot ..

Should we avoid seeing sister M now ? She lives with my mum as well ..
Should we avoid sister M and my mum ?