Maybe all the allergic infants died and didn't make it into the study.
Now, the infant death rate in Israel seems to actually lower by almost half of the US (Iḿ seeing 5.4 per 1000 for the US, vs 2.2 for Israel).
https://www.macrotrends.net/countries/ISR/israel/infant-mort...
https://www.cdc.gov/reproductivehealth/maternalinfanthealth/...