The exploration of the chiasm and retrochiasmal visual pathways relies on magnetic resonance imaging. If a lesion of the optic chiasm is suspected, the millimetric acquisitions in T2 and T1 weighting with and without contrast infusion are carried out in the three planes.
There are two vaccines available in the UK-an oral vaccine and an injectable vaccine. Both vaccines stimulate your body to make antibodies against typhoid germs (bacteria). These antibodies protect you from illness should you become infected with typhoid bacteria.
Hepatitis A-boost with a single dose of hepatitis A vaccine 6 months to 36 months later for long term protection. Typhoid-re-immunize with a single dose of Typh-I vaccine every 3 years. HA-Typh-I vaccine can be used after 3 years if boosters are needed for both hepatitis A and typhoid.Refer to Vaccine Administration Practices in Part 1 for additional information.yphoid-re-immunize with a single dose of Typh-I vaccine every 3 years. HA-Typh-I vaccine can be used after 3 years if boosters are needed for both hepatitis A and typhoid. Refer to Vaccine Administration Practices in Part 1 for additional information.