None of those studies controlled who was exposed to the disease. This is unethical by modern standards and is stated as a comment in your link.
Notice the results from the study in Asia: (your link)
>"25 (2.5%) of 1017 infants assigned to receive vaccine and 20 (2.0%) of 1018 assigned to receive placebo had a serious adverse event within 14 days of any dose.
The most frequent serious adverse event was pneumonia (vaccine 12 [1.2%]; placebo 15 [1.5%])."
The infants getting the vaccine vs placebo within 14 days had almost identical results.
Notice the results from the study in Asia: (your link)
>"25 (2.5%) of 1017 infants assigned to receive vaccine and 20 (2.0%) of 1018 assigned to receive placebo had a serious adverse event within 14 days of any dose.
The most frequent serious adverse event was pneumonia (vaccine 12 [1.2%]; placebo 15 [1.5%])."
The infants getting the vaccine vs placebo within 14 days had almost identical results.