Chikungunya is an α-virus (RNA). Its carriers are Aedes aegypti and Aedes albopictus mosquitoes. Chikungunya was first discovered in 1952 in Tanzania, Africa. It was first caught in Bangladesh in 2008. Chikungunya spread widely in Bangladesh in April-May 2017. Chikungunya is also known as Langra Zor.
Chikungunya symptoms
The attack of this virus causes severe headache. Rash on the body. The body becomes weak. Joint pain in body joints. Body feels cold and has high fever. Nausea and vomiting. Red rash can be seen on the skin.

In 1999, the first outbreak of Nipah virus occurred in pig farms in Malaysia. Bats are carriers of this virus. It is transmitted to the human body through the raw juice of dates. It is an RNA virus. The attack of this virus causes complications in breathing.
Nipah virus symptoms
This virus causes dizziness and headaches. Muscle and throat pain. Trincha occurs, the patient becomes unconscious. Pneumonia occurs and acute respiratory distress occurs.

The disease that Zika virus causes is called Zika virus. In 1947, the Zika virus was first detected in rhesus monkeys living in the Zika forest in Uganda. It is spread by mosquitoes. In March 2016, Zika virus was detected in Chittagong district of Bangladesh. Aedes aegypti and Aedes albopictus mosquitoes are the vectors of Zika virus.
Symptoms of the Zika virus virus
The Zika virus is spread by mosquitoes. This virus causes red spots or rashes on the body. Headache and lethargy occur. Muscle aches. Body aches. The eyes become red, the eyes hurt and it is called conjunctivitis. Chills and fever in the body. Arthritis and joint pain in the body.

Swine flu is caused by Swine Influenza virus. Swine flu is caused by influenza viruses H5N1 and H1N1. Swine flu was detected in April 2009. Humans and pigs are infected by this virus. Thousands of chickens die from this disease every year in Bangladesh. In India, 34,000 people were infected in February 2015. Dr. Siddiq Publications
Symptoms of swine flu virus
Swine flu is caused by Swine Influenza Virus. This virus causes chills and irritation. Runny nose, itchy throat and cough. Eyes sting and water. Body aches. Shortness of breath. Diarrhea occurs. The body is weak, tired and hungry.

Bird flu is caused by Avian Influenza virus (Hemagglutinin-1 Neuraminidase type-1=H1N1). In 2008, bird flu became an epidemic in Bangladesh and West Bengal. The disease affected poultry and destroyed the poultry industry.
Due to this virus, the body is infected. Body aches. Ga massas massas. Cold, sneezing and coughing. Headache and muscle pain. Nausea and vomiting. Diarrhea is.

Ebola is a deadly virus. In 1976, a farmer died of the virus on the banks of the Ebola River in Congo, Africa. The dead farmer’s eyes, nose, ears and throat were bleeding. The virus was named Ebola virus after the river. An outbreak of the Ebola virus in Zaire, Africa. In 2014-15, the Ebola outbreak killed 11,000 people, including 250 health workers, in Guinea, Sierra Leone and Liberia. Symptoms appear within 2-21 days.

Numerous viruses have become epidemic and spread rapidly among people. Viruses that cause global epidemics are:
(i) HIV : The virus that causes the deadly disease AIDS is HIV. It destroys human white blood cells. The body’s immune system is reduced or destroyed. In Bangladesh, the number of AIDS patients and the number of deaths are increasing.
(ii) Ebola virus: Ebola is a deadly virus. In 1976, a farmer died of the virus on the banks of the Ebola River in Congo, Africa. The dead farmer’s eyes, nose, ears and throat were bleeding. The virus was named Ebola virus after the river. An outbreak of the Ebola virus in Zaire, Africa. In 2014-15, the Ebola outbreak killed 11,000 people, including 250 health workers, in Guinea, Sierra Leone and Liberia. Symptoms appear within 2-21 days.
(iii) Bird flu virus: Bird flu disease is caused by Avian Influenza virus (Hemagglutinin-1 Neuraminidase type-1=H1N1). In 2008, bird flu became an epidemic in Bangladesh and West Bengal. Poultry affected by this disease and the poultry industry was destroyed.
(iv) Swine flu virus: Swine flu is caused by Swine Influenza virus. Swine flu is caused by influenza viruses H5N1 and H1N1. Swine flu was detected in April 2009. Humans and pigs are infected by this virus. Thousands of chickens die from this disease every year in Bangladesh. In India, 34,000 people were infected in February 2015.
(v) Zika virus: The disease caused by Zika virus is called Zika virus. In 1947, the Zika virus was first detected in rhesus monkeys living in the Zika forest in Uganda. It is spread by mosquitoes. In March 2016, Zika virus was detected in Chittagong district of Bangladesh. Aedes aegypti and Aedes albopictus mosquitoes are the vectors of Zika virus. Dr. Siddiq Publications
(vi) Nipah virus: The first outbreak of Nipah virus occurred in pig farms in Malaysia in 1999. Bats are carriers of this virus. It is transmitted to the human body through the raw juice of dates. It is an RNA virus. The attack of this virus causes complications in breathing.
(vii) Chikungunya: Chikungunya is an α-virus (RNA). Its carriers are Aedes aegypti and Aedes albopictus mosquitoes. Chikungunya was first discovered in 1952 in Tanzania, Africa. It was first caught in Bangladesh in 2008. Chikungunya spread widely in Bangladesh in April-May 2017. Chikungunya is also known as Langra Zor.

Virus that are naturally transmitted from vertebrates to humans are called zoonotic viruses. Zoonetic virus are:
(i) SARS Corona virus: Severe acute respiratory syndrome caused by coronavirus is called SARS. The disease is transmitted from bats to humans. In 2003, about 800 people died in China, Taiwan, Canada and other countries due to Sars disease.
(ii) MERS Corona Virus: The disease caused by Middle East respiratory syndrome coronavirus is called MERS. The disease is transmitted from bats to humans. Many people died in the Middle East due to Mars disease in 2003.
(iii) Sars Corona Virus-2: The disease caused by Severe acute respiratory syndrome coronavirus-2 is called SARS-2. The disease is globally known as COVID-19. It has been transmitted to humans from bats in Yunnan, China. Six million people died from the disease from 2019-2023. Dr. Siddiq Publications

1. Causing human diseases: Viruses cause serious diseases like human measles, measles, polio, rabies, influenza, jaundice, herpes, dengue, hepatitis, Ebola, AIDS, Sars, swine flu, cancer etc. Viruses that cause cancer in the human body are called oncogenic viruses. Cancer-causing DNA viruses are called simian and RNA viruses are called retroviruses. Human papillary virus (HPV) causes tumors, Kaposi sarcoma herpes virus (KSHV) causes skin cancer and hepatitis-C virus causes liver cirrhosis.
2. Plant Diseases: Diseases like plant mosaic, leafroll, tomato bushist, rice tungro, papaya ring spot, banana bunchy top etc. are caused by viruses. About 300 plant diseases are caused by viruses and reduce yields. Dr. Siddiq Publications
3. Cattle Diseases: Bovine Spring Disease; Foot and mouth disease in cattle, buffalo, sheep, goats, pigs, etc. and rabies in dogs and cats are caused by viruses.
4. Poultry Diseases: Poultry diseases such as avian, influenza, bird flu, swine flu etc. are caused by viruses.
5. Silkworm disease: Nuclear polyhedrosis virus (NPV) causes silkworm disease. This resulted in a disaster in the silk industry.

Chikungunya is an α-virus (RNA). Its carriers are Aedes aegypti and Aedes albopictus mosquitoes. Chikungunya was first discovered in 1952 in Tanzania, Africa. It was first caught in Bangladesh in 2008. Chikungunya spread widely in Bangladesh in April-May 2017. Chikungunya is also known as Langra Zor.