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Varicella Cases Down, Breakthrough Cases Up.
BALTIMORE -- The incidence of varicella cases and hospitalizations dropped by about 80% between 1995 and 2000 in several areas of the country being monitored by the Centers for Disease Control and Prevention, Dr. Jane Seward reported in a poster presentation at the annual meeting of the Pediatric Academic Societies.
The greatest drop was among children aged 1-4 years, but declines were seen in all age groups, said Dr. Seward of the CDC in Atlanta.
In another presentation, Dr. Karin Gail of the CDC reported that the proportion of breakthrough cases of varicella is increasing at these sites, although there is no evidence of waning immunity.
The three sentinel surveillance sites--Antelope Valley Calif.; West Philadelphia, Pa.; and Travis County Tex.--have been monitored since 1995 to evaluate the impact of the live attenuated varicella vaccine. Reports of varicella cases come from schools and preschools, child care centers, physicians, public health clinics, large employers, and households.
Vaccine use is monitored through the Vaccine for Children Program and estimates of coverage are based on the National Immunization Survey.
- Varicella Cases Down, Rise in Breakthrough Cases.
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...incidence of varicella cases and hospitalizations...proportion of breakthrough cases of varicella...Reports of varicella cases come from...Reports of varicella cases from 1995...incidence of breakthrough cases is increasing...
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- Magazine article from: OB GYN News JANCIN, BRUCE September 15, 2000 700+ words
INCLINE VILLAGE, NEV. -- Cases of varicella plunged by 71%-89% at the nation's three active surveillance sites between the first half of 1995 and the first half of 1999. This represents a major success story for the varicella vaccine licensed in 1995, Dr. Karin Gall said at a satellite symposium
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...had reported breakthrough varicella cases in recent years, 71% of...agreed that the level of breakthrough cases was acceptable. Only 38...was needed to control the breakthrough cases, whether they had seen...
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...vaccinated. The proportion of varicella cases that occurred in vaccinated...parallel trend, the incidence of breakthrough cases steadily increased as the...85%) decline in overall varicella cases, the investigators noted...
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...vaccinated. The proportion of varicella cases that occurred in vaccinated...parallel trend, the incidence of breakthrough cases steadily increased as the...85%) decline in overall varicella cases, the investigators noted...
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- Magazine article from: Pediatric News Tucker, Miriam E. August 1, 2005 700+ words
...increasing reports of breakthrough cases of varicella in vaccinated...the increasing number of breakthrough cases in highly vaccinated populations...Valley, Calif., where varicella cases dropped by 94% among...both groups agreed that breakthrough cases are infectious. ...
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- Magazine article from: Family Practice News Tucker, Miriam E. August 1, 2005 700+ words
...rising reports of breakthrough cases of varicella in...Calif., where varicella cases dropped by 94...groups agreed that breakthrough cases are infectious...although vaccinated breakthrough cases are typically far...
- Varicella vaccine reduces contagiousness of chickenpox.
- Newspaper article from: Medical Letter on the CDC & FDA September 5, 2004 700+ words
...United States, approximately 4 million varicella cases occurred each year, resulting in...on the contagiousness of vaccinated varicella cases. Jane F. Seward, MPH, of the U...Angeles County during 1997 and 2001. Varicella cases were reported by child-care centers...
