Inapparent infection cases of tilapia lake virus (TiLV) in farmed tilapia

Aquaculture ◽  
2018 ◽  
Vol 487 ◽  
pp. 51-55 ◽  
Author(s):  
Saengchan Senapin ◽  
K.U. Shyam ◽  
Watcharachai Meemetta ◽  
Triwit Rattanarojpong ◽  
Ha Thanh Dong
Keyword(s):  
Inapparent Infection

scholarly journals Modern Problems of Tick-Borne Encephalitis Specific Prevention. Communication II: Peculiarity of Immunity in Area with Siberian Subtype Domination

2015 ◽  
Vol 14 (6) ◽  
pp. 65-73 ◽  
Author(s):  
V. V. Pogodina ◽  
M. S. Shcherbinina ◽  
L. S. Levina ◽  
S. G. Gerasimov ◽  
N. M. Kolyasnikova
Keyword(s):  
Far East ◽  
Inapparent Infection ◽  
The Far East ◽  
Tick Borne Encephalitis ◽  
Tbe Virus ◽  
Siberian Subtype

Siberian subtype of TBE virus dominates in the most part of Russia outside of the Far East. Peculiarity of immunity induced by Siberian subtype during disease or inapparent infection and change of immunity after vaccination are described in this article. Protective titre of antibodies and persistence of TBE virus (TBEV) in vaccinated organism are discussed.

CLINICAL AND EPIDEMIOLOGIC OBSERVATIONS ON ENTEROVIRUS INFECTION IN A CIRCUMSCRIBED COMMUNITY DURING AN EPIDEMIC OF ECHO 9 INFECTION

PEDIATRICS ◽  
1960 ◽  
Vol 26 (1) ◽  
pp. 12-26
Author(s):  
Martha Lipson Lepow ◽  
David H. Carver ◽  
Frederick C. Robbins
Keyword(s):  
Age Groups ◽  
Clinical Manifestations ◽  
Recent Infection ◽  
Inapparent Infection ◽  
Younger Age ◽  
Echo Virus ◽  
Serologic Evidence ◽  
The Central Nervous System ◽  
Simultaneous Infection ◽  
Group B

A clinical, epidemiologic and laboratory study was undertaken in a housing development during an epidemic of illness due to ECHO virus, type 9. The clinical manifestations varied with age. The younger children exhibited an exanthem while older persons frequently had evidence of irritation of the central nervous system. Multiple cases occurred within families, with the incidence of illness highest in the younger age groups. No serious consequences of the illness were seen. Echo 9 virus was recovered with greater frequency from the intestinal contents of young children with illness than from ill adults, although serologic evidence of recent infection in these adults could be demonstrated. The rate of inapparent infection with ECHO 9 virus was low. Virus rarely persisted in the feces beyond 14 days after onset of illness. Group B Coxsackie viruses, type 4 and type 5, were found also to be the cause of many infections within the same population at the same time. Illnesses due to these viruses were similar to those due to ECHO 9 virus, except that no eruption was observed. The rate of inapparent infection was higher than that observed with ECHO 9 virus. Simultaneous infection with ECHO 9 virus and Coxsackie B4 or B5 virus was rare.

STATUS AND SIGNIFICANCE OF INAPPARENT INFECTION WITH VIRUS OF JAPANESE B ENCEPHALITIS IN KOREA AND OKINAWA IN 194612

1950 ◽  
Vol 51 (1) ◽  
pp. 13-20 ◽  
Author(s):  
RAY E. DEUEL ◽  
MALCOLM B. BAWELL ◽  
MINORU MATUMOTO ◽  
ALBERT B. SABIN
Keyword(s):  
Inapparent Infection

STATUS AND SIGNIFICANCE OF INAPPARENT INFECTION WITH VIRUS OF JAPANESE B ENCEPHALITIS IN JAPAN IN 194612

1950 ◽  
Vol 51 (1) ◽  
pp. 1-12
Author(s):  
MALCOLM B. BAWELL ◽  
RAY E. DEUEL ◽  
MINORU MATUMOTO ◽  
ALBERT B. SABIN
Keyword(s):  
Inapparent Infection

scholarly journals HOMOTYPIC COMPLEMENT-FIXING ANTIBODY IN MONKEYS INFECTED WITH TYPE 2 POLIOMYELITIS VIRUS BY THE ORAL ROUTE

1952 ◽  
Vol 96 (1) ◽  
pp. 55-58 ◽  
Author(s):  
Jordi Casals ◽  
Peter K. Olitsky ◽  
Albert B. Sabin
Keyword(s):  
Neutralizing Antibody ◽  
Oral Route ◽  
The Other ◽  
Human Beings ◽  
Serum Dilution ◽  
Cynomolgus Monkeys ◽  
Inapparent Infection ◽  
Order Of Magnitude

CF tests with Type 2 poliomyelitis antigen (MEF1) were performed on the pre- and postinfection sera of 20 cynomolgus monkeys which developed paralytic, non-paralytic, or inapparent infection following oral administration of a Type 2 strain of virus (Y-SK). All the monkeys developed neutralizing antibody, and 17 developed CF antibody in an original serum dilution titer of 1:4 or greater. The 3 monkeys which did not develop this level of CF antibody were in a group of 7 which died within 8 days after onset of paralysis. The CF titers were as high at 2 to 6 days after onset of paralysis in the other 4 moribund or dead monkeys as in the surviving animals tested 4 weeks after the first dose of virus and the CF titers were of the same order of magnitude in the groups with paralytic, non-paralytic, or inapparent infection. The Type 2 poliomyelitis CF titers developed in monkeys as a result of infection with homotypic virus were not greater than those found in human beings infected with heterotypic Type 1 poliomyelitis strains.

scholarly journals A RICKETTSIAL INFECTION IN CANADIAN VOLES

1946 ◽  
Vol 84 (1) ◽  
pp. 37-50 ◽  
Author(s):  
James A. Baker
Keyword(s):  
Guinea Pigs ◽  
Scrub Typhus ◽  
Living Cells ◽  
Rickettsial Infection ◽  
Contact Points ◽  
Inapparent Infection ◽  
On This Island ◽  
The Relationship ◽  
Lethal Doses ◽  
Infective Agent

From apparently normal voles captured on Grosse Isle, Province of Quebec, Canada, an infective agent has been grown in embryonated eggs, and by inoculation an inapparent infection was established in voles, mice, guinea pigs, hamsters, and rats. No growth of the agent was obtained in the absence of living cells, and the manner of its development in the yolk sac of embryonated eggs, as well as morphological, epidemiological, and pathogenic features, indicates a rickettsial nature. The inability to transmit infection by either cage or intrauterine contact points to a vector, and mites are shown to have a probable part in the epidemiology. Mice infected with the vole agent resist lethal doses of the Karp strain of scrub typhus, and certain epidemiological, morphological, and immunological features support the relationship indicated by the mouse tests. It is therefore concluded that voles on this island have an inapparent infection due to a rickettsia that may be related to the rickettsia of scrub typhus.

scholarly journals IMMUNOLOGICAL DETERMINANTS OF POLYOMA VIRUS ONCOGENESIS

1962 ◽  
Vol 115 (1) ◽  
pp. 181-193 ◽  
Author(s):  
Karl Habel
Keyword(s):  
Virus Infection ◽  
Tumor Cell ◽  
Cellular Immunity ◽  
Tumor Antigen ◽  
Polyoma Virus ◽  
Serum Antibodies ◽  
Foreign Antigen ◽  
Adult Mice ◽  
Naturally Occurring ◽  
Inapparent Infection

Adult mice and hamsters can be made resistant to an isologous transplantable polyoma tumor by an inapparent infection with polyoma virus. This resistance is cell-mediated and seems not to be related to anti-viral serum antibodies. The basis of the resistance appears to be a transplantation type of cellular immunity directed against a "foreign" antigen contained in the tumor cell. Evidence has been presented to demonstrate this tumor antigen. It is possible that this phenomenon may explain the lack of oncogenesis by polyoma virus infection of adult mice, and the rarity of naturally occurring polyoma tumors.

Sign in / Sign up

Export Citation Format

Share Document