Covid-19 Essay in English
Coronavirus pandemic disease, also known as COVID-19, where 19 specifies the year 2019 and COVID stands for coronavirus disease. It was first identified in Wuhan, China. It is also known as SARS-CoV-2 as it is caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). SARS-CoV is the strain of virus that causes contagious respiratory disease called as Severe Acute Respiratory Syndrome and was identified in 2003. And in 2019, SARS-CoV-2 was identified.
Coronavirus name is derived from latin word corona which means “crown” that shows appearance of crown or a solar corona around virus particles. It is club-shaped as the surface of virus covered with club-shaped spike proteins.
The envelope of coronavirus consists membrane protein (M), envelope protein (E) and spike protein (S). Coronavirus is positive sense single strand RNA virus. The RNA is protected by nucleocapsid protein which is present inside the envelope. It is helical and enveloped virus which means viral particle is wrapped by envelope protein. Viral envelope helps to introduce viral genome (RNA or DNA) into host cell.
The new coronavirus believed to be cross-species jump. It is new because it do not resemble any previously known. It is different and difficult to know because of its surface proteins called as spikes that are important for attachment between virus and host cell.
Virus particles deliver its genome into the host cell so that DNA or RNA (genome) can be transcribed and translated by the host cell. Therefore, coronavirus infection begins when the virus enters the organism which is called as host and spike protein attaches to its cell receptor and enter the cell.
After entry into the cell of host, the RNA genome of coronavirus enters the cell cytoplasm. It is now expressed by host cell which means transcribed and translated. As coronavirus has positive sense single strand RNA virus, it directly synthesize minus strand by using positive strand as template. This minus strand is used for replication of new plus-strand RNA genomes.
Positive-sense RNA is same as mRNA and therefore directly translated by the host cell. Negative-sense RNA is complementary mRNA. Therefore it is converted into positive-sense RNA with help of RNA polymerase and then translation occurs. The viral progeny is ready for exocytosis into extracellular space after binding to their membrane protein (M), envelope protein (E) and spike protein (S).
Coronavirus Pandemic symptoms
Coronavirus Pandemic variant symptoms include high fever, headache, cough, nausea, and stomach pain. It can also cause complications in the respiratory system, such as pneumonia, sore throat, and inflammation of the kidney and its bladder. The virus is primarily spread through bodily fluids, such as blood, saliva, and vaginal secretions. The majority of cases require prompt treatment to prevent the illness from progressing.
In the United States, a brief outbreak was reported in March between Chinese nationals and individuals from countries affected by the previous pandemic. By the end of March, there had already been three additional outbreaks. At that point, the National Institutes of Health (NIH) and other international organizations had provided funding for efforts aimed at controlling the new avian influenza. Between the March 4th and 6th pandemic, the number of patients diagnosed with this type of influenza reached a one-month high, which demonstrates how easily this disease can be brought out of control.
Coronavirus Pandemic precautions
1. Washing hands frequently
Coronaviruses contain genetic information (single stranded RNA) inside fat-based covering known as a viral envelope. When they interact with soap, this coating of fat will be destroyed by the soap molecules. Thus, virus can no longer infect the host organism.
2. Stay at home
Stay at home# Best advice that can help stop spreading of coronavirus….
Coronavirus need host for its survival. If we all cooperate and stay at home then virus will not get host and will not be alive. Virus is non living outside the body. They contain genome DNA or RNA but cannot grow independently. Instead, they must need a host organism for its survival as they use host genetic instructions.
3. Maintaining social distance
Maintain at least 3 feet distance between infected person and yourself. By coughing or sneezing person shed small droplets from their nose or mouth that may contain COVID-19 virus and if you are close to that person then those droplets fall on you and you also become infected.
4. Touching nose, eyes and mouth must be avoided
If hands touch picked up viruses from infected person or surface then it can transfer the virus through nose, eyes and mouth as virus can enter the body through these openings. COVID-19 virus has a long incubation period which means that sick people show symptoms after the incubation period which is minimum from 5 to 6 days and maximum 14 days.
- Are viruses living or non living?