Aboriginal people are getting vaccinated against hepatitis A in Taiwan since 1995. The study found that the hepatitis A incidence decreased by more than 3 times due to vaccination, despite the fact that only 2% of the population was vaccinated, and most of them lived in the mountains or on isolated islands.
Another study found that only 0.4% of unvaccinated population had hepatitis A antibodies, which led the authors to conclude that it is hygiene, and not vaccination, that is responsible for the decrease in the incidence of hepatitis A. Improved hygiene shifted hepatitis A incidence from children to older-aged people.
Outbreak of hepatitis A in Taiwan. More than 1,000 cases, 70% of them homosexuals, 60% HIV positive, and more than 60% infected with syphilis, gonorrhea or shigellosis.
There are no mentions of deaths from hepatitis A in any of these outbreaks.
The incidence of varicella decreased from 7.14 to 0.76 per 1,000 in Taiwan from 2001 to 2009, and the incidence of herpes zoster increased from 4.04 to 6.24 per 1,000.
The incidence of chickenpox is higher during the winter months, while the incidence of shingles, on the contrary, is higher during the summer months.
In March 1992, 8 infants in Taiwan died within 36 hours of their DTP vaccination. Seven of them received vaccines from the same lot (which accounted for 58% of the vaccines used at that time), which prompted the authorities to suspend the vaccination of that lot.
The authors analyzed the cases of SIDS in Taiwan between 1996 and 2013 and concluded that the risk of sudden death after DTP is 60% higher in girls within two days of vaccination. The authors conclude that the vaccine probably only accelerated the deaths of these girls for a couple of days, and they were already destined to die from SIDS, just a little later than they actually did.
Исследование 568 тысяч детей в Тайване. У детей, зараженных энтеровирусами, риск заболеть лейкемией был на 56% ниже.