Volume 12, Number 2—February 2006

Research models and regulatory measures could aid in developing antimicrobial drugs to address bacterial resistance.

The decrease in the proportion of drug resistance among newly infected HIV-1 patients may signal a worsening of the epidemic.

The emergence of HBsAg mutants presents a challenge to HBV screening programs.

Standardizing methods and reporting could improve interventions that reduce Clostridium difficile–associated diarrhea and antimicrobial drug resistance.

The pathogen is reemerging in the United States and Europe and is responsible for a number of clinical conditions.

Free-grazing ducks in rice paddies are a critical factor in the spread and persistence of avian influenza.

Nipah virus, not previously detected in India, caused an outbreak of febrile encephalitis in West Bengal.

The emergence of multiple multidrug-resistant Panton-Valentine leukocidin–positive MRSA clones in the community is a major public health concern.

Ameba-associated microorganisms should be suspected when conventional microbiologic test results are negative.

Rickettsia spp. are an underrecognized cause of undifferentiated febrile illness.

Helicobacter pullorum is present in approximately one third of the chickens in Belgium.

Infection reduces survival of otherwise asymptomatic maintenance hosts in a natural reservoir population.

Clinicians in Ontario should be aware of symptoms and areas where disease is endemic.

Increased consumption of fresh poultry in Denmark has contributed substantially to the increasing incidence of human campylobacteriosis.

A case series suggests that the spectrum of complications in dengue infection is widening.

Scrub typhus is likely endemic in Palau.