The Inactivation of Encephalitis Virus (St. Louis Type) by Means of Soft X-rays

Genetic variation of St. Louis encephalitis virus

St. Louis encephalitis virus (SLEV) has been regularly isolated throughout the Americas since 1933. Previous phylogenetic studies involving 62 isolates have defined seven major lineages (I-VII), further divided into 14 clades. In this study, 28 strains isolated in Texas in 1991 and 2001-2003, and three older, previously unsequenced strains from Jamaica and California were sequenced over the env...

Avian Hosts of St. Louis Encephalitis Virus

Structure of the St. Louis encephalitis virus postfusion envelope trimer.

St. Louis encephalitis virus (SLEV) is a mosquito-borne flavivirus responsible for several human encephalitis outbreaks over the last 80 years. Mature flavivirus virions are coated with dimeric envelope (E) proteins that mediate attachment and fusion with host cells. E is a class II fusion protein, the hallmark of which is a distinct dimer-to-trimer rearrangement that occurs upon endosomal acid...

St. Louis Encephalitis

Transmission of the virus of St. Louis encephalitis to normal chickens by the bite of infected mites (Dermanyssus gallinae) has been demonstrated. Both experimentally infected and naturally infected mites were shown to be capable of transferring the virus of St. Louis encephalitis to chickens by bite. Virus is present in the blood of such chickens in small amounts, so that demonstration of vire...

Stability of St. Louis encephalitis virus in the airborne state.

The aerosol stability of St. Louis encephalitis (SLE) virus was studied over a 6-hr period at a temperature of 21 C and relative humidity values of 23, 46, 60, and 80%. Aerosols were generated from and collected in 0.75% bovine albumin-buffered saline, and spores of Bacillus subtilis var. niger were used as the tracer to determine the physical decay of the aerosols. Aerosol samples were titrate...