Trend of Adenovirus Type 7 Infection, an Emerging Disease in Japan

Yamadera, Shizuko; Yamashita, Kazuyo; Akatsuka, Masae; Kato, Nobuko; Inouye, Sakae

doi:10.7883/yoken1952.51.43

Cited by 37 publications

(11 citation statements)

References 5 publications

(8 reference statements)

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“…Similarly, the reemergence of Ad7 and Ad4 was observed in Taiwan in 1999 and 2000. Epidemics of Ad7 and Ad4 were also observed in the UK [Cooper et al, 2000], Japan [Yamadera et al, 1998], and Korea [Houng et al, 2002].…”

Section: Discussionmentioning

confidence: 93%

A two decade survey of respiratory adenovirus in Taiwan: The reemergence of adenovirus types 7 and 4

Lin

Chen

et al. 2004

Journal of Medical Virology

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From November 1999 to December 2001, three outbreaks of adenovirus (Ad) respiratory infection occurred in southern Taiwan. To determine the circulating serotypes and molecular epidemiology, a total of 524 virus strains were randomly selected from 1,064 strains isolated from 1981 to 2001, and were studied using restriction fragment length polymorphism (RFLP) and polymerase chain reaction (PCR)-RFLP. The major subgenus found was subgenus B (45%), followed by subgenus E (29%) and subgenus C (25%). Ad3 and Ad7 were the major types found during the 1st outbreak, which occurred from November 1999 to March 2000, while Ad4 was found mainly during the 2nd and 3rd outbreaks in October 2000 and September 2001, respectively. Both Ad7 and Ad4 were reemerged serotypes, whereas Ad3 was consistently isolated during the survey, although it declined drastically from 36 to 2% in 2001. Genotype analysis in this study showed that the only strain of Ad7 found in 1983 was Ad7a, but all randomly selected strains of Ad7 isolated during 1999-2000 were Ad7b. The clinical features of 217 patients were analyzed during the 1999-2000 outbreaks. About 79% of the total cases were less than 7 years old. The ratio of male to female was 2:1. Severe infections, such as pneumonia and acute bronchitis, accounted for nearly half of the cases (43%). These results show the reemergence and changing of serotypes, the clinical association of respiratory adenovirus infections, and the molecular epidemiology of Ad7 genotypes in Taiwan during the past two decades.

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Section: Discussionmentioning

confidence: 93%

A two decade survey of respiratory adenovirus in Taiwan: The reemergence of adenovirus types 7 and 4

Lin

Chen

et al. 2004

Journal of Medical Virology

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“…Illness due to type 7 has been extensively shown in table 1. Unvaccinated recruits were >17 times as likely described in the medical literature, especially among pediatric as vaccinated recruits to have a verified case of adenovirus populations [23][24][25][26][27][28][29]. This pathogen has sometimes been asserotype 3 or serotype 7 infection.…”

Section: Methodsmentioning

confidence: 99%

Large Epidemic of Respiratory Illness Due to Adenovirus Types 7 and 3 in Healthy Young Adults

Ryan¹,

Gray²,

Smith³

et al. 2002

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After 25 years of successful control through immunization, respiratory infections due to adenoviruses have reemerged to threaten the health of young adults in the military. Shortly after the loss of adenovirus vaccine supplies, a large outbreak of respiratory illness was observed at the United States Navy's sole basic training center. Laboratory testing confirmed 541 cases of adenovirus infection, including 378 cases due to serotype 7 and 132 cases due to serotype 3. This outbreak was remarkable because of its unique serotype distribution and the large amount of data available to describe demographic factors associated with infection. This was the largest outbreak of respiratory illness due to adenovirus types 7 and 3 documented in recent history, and it portends even greater challenges for young adults in the military in the postvaccine era.

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“…During the same period outbreaks of adenovirus 7 were observed nationwide in Japan [Yamadera et al, 1998;Noda et al, 2002]. One of the factors responsible for the emergence of Fig.…”

Section: Discussionmentioning

confidence: 94%

“…Adenovirus 7 had seldom been isolated in Japan until 1995, although it has been very common in other parts of the world [Wadell, 1984;Wadell et al, 1985;Yamadera et al, 1998]. The Program of Infectious Agent Surveillance in Hiroshima City started in April 1982 as part of the National Epidemiological Surveillance of Infectious Diseases.…”

Section: Introductionmentioning

confidence: 99%

Genome types of adenovirus type 7 isolated in Hiroshima City

Ikeda

Yamada

Noda

et al. 2002

Journal of Medical Virology

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One hundred thirty-two strains of adenovirus type 7 were isolated in Hiroshima City during the period 1995-1999. About 80% of the viruses were isolated from patients with respiratory illness, and about 70% were isolated from children younger than 6 years old. DNA restriction analysis was performed on 58 of the 132 isolates. Two genome types corresponding to adenovirus 7d and adenovirus 7h were recognized using BamHI. By using an additional 10 restriction endonucleases (BclI, BglI, BglII, BstEII, HindIII, HpaI, SmaI, PstI, PvuII, and SacI), the 58 isolates were classified finally into five genome types according to Wadell and coworkers' nomenclature system: adenovirus 7d2 (54 isolates), adenovirus 7d3 (one isolate), adenovirus 7d4 (one isolate), adenovirus 7d5 (one isolate), and adenovirus 7h (one isolate), among which adenovirus 7d3, 7d4, and 7d5 were new genome types. Our results indicate that the predominant genome type of adenovirus 7 that circulated in Hiroshima City during the period May 1995-November 1999 was adenovirus 7d2.

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Trend of Adenovirus Type 7 Infection, an Emerging Disease in Japan

Cited by 37 publications

References 5 publications

A two decade survey of respiratory adenovirus in Taiwan: The reemergence of adenovirus types 7 and 4

A two decade survey of respiratory adenovirus in Taiwan: The reemergence of adenovirus types 7 and 4

Large Epidemic of Respiratory Illness Due to Adenovirus Types 7 and 3 in Healthy Young Adults

Genome types of adenovirus type 7 isolated in Hiroshima City

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