Objective     To understand the status and the law of hepatitis B (HB) developed in base population of a military command.      Methods     The epidemic and epidemiological data of HB in the base population were collected respectively

and retrospectively analyzed.       Results     The proportion of HB infection in a military command was 25%-30% of the total cases infected hepatitis in 1991-1993 annually

fluctuated around 50% in 1994-1997

was above 60% in 1998-2000

still around 50% in 2001-2005. By comparing the relative ratio

the number of HB infection in troops increased by 3%-30% in 1991-1997

then decreased since 1998

and showed a rebound in 2005. Those infected HB

with mean age of 28.10 years

were composed of 95.67% male (1790/1871) and 4.33% female (male∶female=22.10∶1). The soldiers infected HB most

accounting more than 60% of the total infected cases. The individual cases occurred all around the year

with no clear seasonal variation. All units had individual cases

among which B

A

F units with a high proportion accounted for 23.36%

22.98%

16.41% of the total infected cases. The cases that were not reported were more than 60% (143/238)

indicating the actual incidence of HB should be more than that of epidemiologic report.      Conclusion     HB infection is high in the military command we investigated

presents descending trend and sporadic feature. Aiming at each link of hepatitis B infection

we should focus on the soldiers

and adopt combined therapy.