There is a bit of counter-evidence for the migration faith:
https://www.gatestoneinstitute.org/10676/germany-migrants-infectious;
http://www.rki.de/DE/Content/Infekt/Jahrbuch/Jahrbuecher/2016.html?nn=2374622.
A report by the German federal government’s Robert Koch Institute, which monitors diseases has stated that there has been an across-the-board rise in infectious diseases since 2015 when Germany undertook its essentially open borders refugee migration program.
Many professionals believe that this institution is still underrating the disease rates, with these diseases now being major problems in Germany:
adenoviral conjunctivitis,
botulism,
chicken pox,
cholera,
cryptosporidiosis,
dengue fever,
echinococcosis,
enterohemorrhagic
E. coli,
giardiasis,
haemophilus influenza,
Hantavirus,
hepatitis,
hemorrhagic fever,
HIV/AIDS,
leprosy,
louse-borne
relapsing fever,
malaria,
measles,
meningococcal disease,
meningoencephalitis,
mumps,
paratyphoid,
rubella,
shigellosis,
syphilis,
toxoplasmosis,
trichinellosis,
tuberculosis,
tularemia,
typhus
and whooping cough.