Here is some background information on RHDV:

1. Discovery and Classification:

• RHDV was first identified in China in 1984 and was originally known as “China Rabbit Calicivirus Disease” or RCV. It was later classified as a calicivirus, a type of small, single-stranded RNA virus.
• Australia released the Rabbit Hemorrhagic Disease Virus (RHDV), also known as the rabbit calicivirus, in 1995. The release was part of a biological control program aimed at managing rabbit populations, which were considered a major pest in the country. This action was taken in an effort to mitigate the environmental and economic damage caused by rabbits.
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2. Types of RHDV:

• There are several strains of RHDV, including the classic RHDV (also known as RHDV1), RHDV2, and others. RHDV2 is a new variant that emerged around 2010 and can affect a wider range of rabbit species, including the European rabbit (Oryctolagus cuniculus), which is more resistant to classic RHDV.
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3. Transmission:

• RHDV is highly contagious and can spread through direct contact between rabbits or via contact with contaminated materials such as food, water, bedding, and clothing. Insects like flies can also act as vectors for transmission.
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4. Clinical Symptoms:

• RHDV can cause sudden death in affected rabbits, often with few or no clinical signs beforehand. Some rabbits may show signs of illness, such as fever, lethargy, loss of appetite, and respiratory distress. Bleeding from the nose or rectum may also occur.
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5. Mortality Rate:

• The mortality rate for RHDV is very high, often approaching 100% in susceptible rabbit populations. The rapid progression of the disease is one of the reasons it is so devastating.
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6. Impact on Wild and Domestic Rabbit Populations:

• RHDV has had significant impacts on both wild and domestic rabbit populations. In the wild, it can cause population declines and disrupt ecosystems. In domestic settings, it can lead to severe economic losses for breeders and pet owners.
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7. Prevention and Control:

• There is no specific treatment for RHDV, so prevention and control measures are crucial. This can include vaccination, strict hygiene measures to prevent the spread of the virus, and quarantine procedures for new rabbits.
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8. Geographic Spread:

• RHDV has spread to various parts of the world. Different strains may be more prevalent in different regions. RHDV2, for example, has been spreading in Europe, North America, and other parts of the world.
• Gauteng and Garden Route have been hot spots identified in South Africa
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9. Research and Surveillance:

• Ongoing research is focused on understanding the virus, developing effective vaccines, and finding ways to control outbreaks. Surveillance efforts are also important for monitoring the spread and prevalence of RHDV.
• Please join our Hotline group in order to assist with the reports of numbers. 
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10. Biosecurity Measures:

• Implementing strict biosecurity measures is crucial in preventing the introduction and spread of RHDV. This includes disinfection protocols, controlling insect vectors, and minimizing contact between infected and susceptible rabbits.
• Deceased rabbits need to be burnt, or buried 1,5M+ deep with Agricultural chalk.
• Please report any sudden mass death to  your nearest vet and state vet,  and see to take some of the bodies in for testing.  This is very important.
• Pick rabbits up using gloves and platic bags, and make sure to sterilize all before going in to any other rabbits.  However, this disease can even be spread by flies, or attached to a dead rabbit’s hair or leaves blowing,  as well as on hay
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It’s important to note that information about RHDV may evolve over time as new research and developments occur in the field of veterinary medicine. Always consult reliable and up-to-date sources for the most current information.