Thursday, December 13

SHINGLES VACCINE


Rujukan Malaysia : 

Rujukan Luar Negara :



Varicella-Zoster Viral Infection


The Varicella-Zoster Virus (VZV) causes two distinct diseases, varicella (chickenpox), usually during childhood, and herpes zoster, HZ (shingles), usually much later in adult life.

The first infection with the varicella-zoster virus causes chickenpox. After recovery, the virus remains latent (sleeping) in spinal nerves and may reactivate years later, causing shingles.

Table 1: Comparison of Chicken Pox and Shingles
Chicken Pox
Shingles
Cause Caused by primary infection with VZV Secondary infection from reactivation of latent VZV
Age when affected > 90% infection occurs before adolescence Only occurs in adults with prior VZV infection
Population affected Children, but may be extended to adult Usually adults aged 50 years or older
Signs & Symptoms Starts with mild fever Loss of appetite
Headache
Tiredness
Itchy rash that becomes blisters
Starts with altered sensation (eg: tingling, burning, numbness at rash area)
Mild fever
Tiredness
Unilateral, localized rash that becomes blisters
Nerve pain
Area of rash Rash is usually widespread over trunk and face with some on arms and legs Rash is localized, in infected nerve supplies, typically on the back/chest/face
Mode of transmission Contact with infected droplets of saliva in the air initially, then contact with liquid from rash blisters may cause chickenpox Contact with liquid from rash blisters that may cause chickenpox
Contagiousness Infectious from 1-2 days before rash appears until after the rash blisters have dried up Infectious once the rash becomes blisters until after the rash blisters have dried up


Table 2: Types of vaccine available in Malaysia


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