1)Nipah virus is a previously unknown virus of the family Paramyxoviridae that has been identified in the northern peninsula of Malaysia. The virus has caused illness and death in humans and pigs.
2)The apparent source of infection for humans is direct contact with pigs. Transmission of virus is thought to be from body fluids of infected pigs. Human-to-human transmission has not been documented.

3)In pigs, the disease is not well documented. Clinical signs in pigs appear to include rapid and labored breathing; an explosive and nonproductive cough; and neurologic changes, including lethargy or aggressive behavior.
4)The natural reservoir of the virus is not yet unknown. Virus has been isolated from humans, pigs, and one dog. Bats, two horses, dogs, and at least one cat have reportedly shown serologic evidence of Nipah virus infection
Background

Nipah virus is a previously unknown virus of the family Paramyxoviridae that has been identified primarily in humans and pigs in Malaysia. In humans, the virus causes fever, severe headache, myalgia, and signs of encephalitis or meningitis. The case fatality rate has been about 40%. 

The first human cases of disease attributed to Nipah virus occurred in late September 1998 in the northern city of Ipoh. The cases were first attributed to the Japanese encephalitis (JE) virus; however, the epidemiology of the disease was not consistent with JE. Most of the cases were in adult males who had direct contact with pigs. In March 1999, Malaysian researchers identified the virus as a previously unknown paramyxovirus. This was confirmed by the CDC. The virus was first called Hendra-like virus because it is similar to the Hendra virus, first identified in horses in Australia in 1994. The virus is now named after the village near Kuala Lumpur from where it was first isolated. 

As of late April 1999, 257 cases of febrile encephalitis had been reported in Malaysia, including 100 deaths. Malaysian states in which these cases have occurred are Perak, Negri Sembilan, and Selangor (map not to scale). Nipah virus was also confirmed in abattoir workers in Singapore, where many hogs from Malaysia are slaughtered.
Transmission and reservoir of the Nipah virus

The apparent source of infection for humans is close contact with pigs. The specific routes of infection have yet to be determined, however the prevailing thought is that transmission of the virus is through direct contact with body fluids. Another theory is that humans may become infected via aerosol transmission from respiratory or urinary secretions.
Signs and symptoms 
This infection can occur in humans without showing any symptoms. However, it is essential for people to look out for influenza-like symptoms. Fever, sore throat, headaches, vomiting and muscle pain (myalgia) are some of the common signs.
The infection progresses to acute respiratory infection (mild to severe) causing interference in breathing. During this phase, people experience atypical pneumonia and acute respiratory distress, which further leads to severe problems.

It further advances to fatal encephalitis, which means causing inflammation of the brain tissue. The symptoms further lead to drowsiness, dizziness, altered consciousness and neurological signs. In severe cases, seizures and encephalitis occur, progressing to a state of coma within 24 to 48 hours.
Prevention 
- Avoid close (unprotected) physical contact with infected people
- Wear NH95-grade and higher masks
- Wash hands regularly with soap
- Avoid consuming partly eaten fruits or unpasteurised fruit juices
- Avoid being around anima pens
- Boil freshly collected date palm juice before consuming
- Thoroughly wash and peel fruits before consuming
- Maintain your and children's personal hygiene
- Cover your household properly.