Prospective surveillance of Haemophilus influenzae type b (Hib) disease has been done since 1981 in two high-risk populations, White Mountain Apaches and Navajos. The attack rate in children less than 5 years of age is 5-10 times higher than in the general US population. Three vaccines were evaluated. Unconjugated Hib capsular polysaccharide produced lower antibody responses in 18- and 24-month-old Apache infants than in white infants. HbOC (Hib oligosaccharide covalently linked to the nontoxic mutant diphtheria toxin CRM197) produced low antibody responses in Navajo infants after one or two doses but induced responses similar to those in whites after three doses. The responses of 18-month-old Navajos to HbOC were lower than those of whites, but most achieved protective levels. PRP-OMP (Hib capsular polysaccharide linked to the outer membrane protein complex of Neisseria meningitidis) produced good immune responses in 2-month-old Navajo and Apache infants after a single dose. This vaccine was greater than 90% efficacious in protecting Navajo infants from Hib disease when given at 2 and 4 months of age. Even a single dose achieved a high protective efficacy.
We evaluate Peter Adler’s challenge to the Centers for Disease Control and Prevention (cdc) draft recommendations on male circumcision (this issue, see pp. 237–262). Thecdcadvocates elective male circumcision (mc) to improve public health in theusabased on strong scientific evidence. In marked contrast to thecdc, Adler’s criticisms depend on speculative claims and obfuscation of the scientific data. Adler’s central argument that circumcision in infancy should be delayed to allow a boy to make up his own mind as an adult fails to appreciate that circumcision later in life is a more complex operation, entails higher risk, is more likely to involve general anaesthesia and presents financial, psychological and organisational barriers. These limitations are avoided by circumcision early in infancy, when it is convenient, safe, quick, low risk, usually involves local anaesthesia and provides benefits immediately. Benefits of male circumcision include: protection against: urinary tract infections that are ten times higher in uncircumcised infants; inflammatory skin conditions; other foreskin problems; sexually transmitted infections and genital cancers in the male and his female sexual partners. Circumcision during infancy is also associated with faster healing and improved cosmetic outcomes. Circumcision does not impair sexual function or pleasure. Some authorities regard the failure to offer circumcision as unethical, just as it would be unethical to fail to encourage paediatric vaccination. Since the benefits vastly outweigh the risks, each intervention is in the best interests of the child. In conclusion, Adler’s criticisms of thecdc’s evidence-based male circumcision policy are flawed scientifically, ethically and legally, and should be dismissed as endangering public health and individual well-being.
A range of caregivers bear responsibility to protect OVC's interests in place of parents in research but are often not prepared to do so. This places greater burden on researchers to assess risks and respond to children's needs. Findings suggest that we should improve support and rethink the roles of guardians, researchers and older children in research participation and protection.
He is engaged in full-time medical and public health research in the fields of hypertension, healthy aging, longevity, disease prevention and male circumcision, with extensive publications in each of these. His patented test for HPV detection, the earliest globally, has led to more effective cervical screening and it was this work that drew him to the field of male circumcision, initially for cervical cancer prevention.
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