write an essay on covid 19 vaccine
Answers
Answer:
Since the World Health Organization (WHO) declared the COVID-19 outbreak a pandemic back in March 2020, the virus has claimed more than 2.5 million lives globally with upwards of 113 million cases being confirmed by laboratory tests (March 2021).
The pandemic has impacted almost every corner of life, causing global economies to stall, changing the way we work and interact with our loved ones, and stretching healthcare systems to the limit. Governments around the world have been forced to implement harsh restrictions on human activity to curb the spread of the virus.
Answer:
now look
Explanation:
Today marks the start of the World Immunization Week. The COVID-19 pandemic, while draws the world’s attention to the vaccine, also reminds us of the importance of immunization, which saves millions of lives each year.
WHO is working with partners all over the world to accelerate research and development of a safe and effective vaccine and ensure equitable access for the billions of people who will need it. But even with an expedited process, development of a vaccine for COVID-19 will take time.
The ongoing pandemic disrupts routine immunization services in many countries. When immunization services are disrupted, even for brief periods during emergencies, the risk of vaccine-preventable disease outbreaks, such as measles and polio, increase. Further disease outbreaks will also overwhelm health systems already battling the impacts of COVID-19.
WHO continues to support countries to maintain essential immunization for all vaccine preventable diseases. We issued guidance on immunization services during the COVID-19 pandemic, which provides guiding principles and considerations to support countries in their decision-making regarding provision of immunization services during the COVID-19 pandemic.
Vaccination is a simple, safe, and effective way of protecting people against harmful diseases. Vaccines reduce risks of getting diseases by working with our body’s natural defenses to build protection. When we get a vaccine, our immune system responds, it
· recognizes the invading germ, such as the virus or bacteria,
· produces antibodies, proteins produced naturally by the immune system to fight disease;
· remembers the disease and how to fight it. If you are then exposed to the germ in the future, your immune system can quickly destroy it before you become unwell.
Process of vaccine development usually needs a few years or even decades. Once a promising candidate vaccine is identified in research, it will firstly undergo scrupulous laboratory testing and preclinical studies, before the manufacture can apply for clinical trials:[1]
The clinical trials are bound by strict regulations and take place across three phases:
During Phase I, small groups (approximately 20-50 people) receive the vaccine. This phase will assess the safety, side effects, appropriate dosage, method of administration and composition of the vaccine.
If it is successful, it will proceed to Phase II. At this stage, the vaccine is usually given to several hundred people. This group will have the same characteristics (e.g. age, sex) as the people for whom the vaccine is intended to be given.
In Phase III, the vaccine is usually given to thousands of people to help ensure it is safe and effective for broader use. Vaccines approved by competent national regulatory authorities are very safe. As with all medicines, side effects can occur after getting a vaccine. However, these are usually very minor and of short duration, such as a sore arm or a mild fever. More serious side effects are possible, but extremely rare. A person is far more likely to be seriously harmed by a disease than by a vaccine.