Hantavirus: Why is a dangerous infection with a mortality rate of up to 50 percent in the news now?
Hantavirus is not usually transmitted from one person to another. However, in the case of the Andean species of hantavirus found in South America, a few cases of human-to-human transmission have been recorded.
Hantavirus is a very deadly ‘zoonotic’ virus that can become a global health challenge at any time. This virus, which is mainly transmitted to humans from rodents, causes serious damage to the lungs and heart if infected. After its sudden outbreak on a cruise ship operating in the Atlantic Ocean, it has become a topic of renewed discussion and concern among health experts and the general public around the world.
What is Hantavirus?
Hantavirus is a group of viruses belonging to the ‘Bunyaviridae’ family. It is named after the ‘Hantan’ river in South Korea, where it was first identified in 1978.
So far, scientists have discovered more than 20 species of it in different parts of the world, which affect human health in different ways.
Based on their effects and geographical presence, hantaviruses are mainly classified into two categories. The New World hantavirus species, found mainly in the American continent, causes ‘Hantavirus Pulmonary Syndrome’ (HPS) or ‘Hantavirus Cardiopulmonary Syndrome’ (HCPS). This causes serious damage to the human respiratory system and heart function.
Similarly, the Old World hantavirus species, which is more active in Europe, Asia and Africa, causes ‘Hemorrhagic Fever with Renal Syndrome’ (HFRS). This type of infection has a risk of direct and fatal effects on the human kidneys.
Recent Outbreak: Hantavirus Scare on Cruise Ships
The main reason why Hantavirus has recently become the focus of international media attention is the sudden outbreak on the MV Hondius cruise ship operating in the Atlantic Ocean. The ship, operated by the Dutch Oceanwide Expeditions company, departed Argentina on April 1. The health crisis on the ship, which is on a tour of remote islands such as Antarctica, South Georgia and Tristan da Cunha, has caught the attention of the world.
According to the latest report from the World Health Organization, seven of the 147 passengers and crew members on board the ship have been confirmed or suspected to be infected with Hantavirus. Three of the infected have died, while one is still receiving treatment in a serious condition. The other three have shown mild symptoms.
The deceased include a German citizen and a Dutch couple. According to the information received, the husband of the Dutch couple died on the ship on April 11, while the wife died in a hospital in South Africa on April 26. This tragic incident has sparked a new debate about the risk of the virus in closed environments such as cruise ships.
Source of infection and transmission
The main source of infection with Hantavirus is rodents. The virus is mainly transmitted to humans through the urine, feces or saliva of rats. When a person breathes in an area contaminated with rat feces, tiny particles of the virus mixed in the air directly enter the respiratory system. This is the most common and major route of infection. In addition, the virus can also enter the body when a rat bites, eats food contaminated with the virus, or touches a contaminated surface and then touches the eyes, nose or mouth with the same hand.
Hantavirus is not usually transmitted from one person to another. However, limited human-to-human transmission of the Andean hantavirus, a strain found in South America, has been recorded. According to the World Health Organization, such transmission is likely to occur through very close and prolonged physical contact.
The current outbreak on the MV Hondius cruise ship is also suspected to have involved human-to-human transmission. Dr. Maria Van Kerkhove, WHO’s director of pandemic preparedness and response, said that the possibility of human-to-human transmission cannot be completely ruled out, as some of the infected people appeared to have had very close contact. However, she urged people not to be overly concerned, saying that the virus is not as easily airborne as flu or COVID-19 and that the risk to the general public is not currently high.
Treatment and prevention
There is no specific drug or specific vaccine developed to protect against hantavirus infection. Therefore, supportive care in hospitals remains the only option to save infected people. If the patient's condition is serious, they are placed in the intensive care unit (ICU) and oxygen therapy and ventilators are used to facilitate the respiratory process.
Since this virus is transmitted by rodents, the best way to avoid it is to avoid contact with rats. Proper arrangements should be made to prevent rats from entering your home, workplace or storage rooms.
Special care should be taken when cleaning areas that may have rat droppings. To prevent dust from flying in such areas, instead of sweeping the floor, only damp cleaning should be done using a disinfectant solution or bleach. The mandatory use of masks and gloves during such cleaning can prevent virus particles from entering the body.
In addition, Squirrels should always be kept in a secure container out of the reach of rodents. People who live or work outdoors or near forests need to pay extra attention to the cleanliness of their surroundings. In unusual circumstances, it is wise to maintain personal hygiene and social distancing, while fully following the instructions of health authorities. Since there is no cure for Hantavirus, awareness and caution are the strongest weapons in the fight against this deadly infection.
