Showing posts with label coronavirus. Show all posts
Showing posts with label coronavirus. Show all posts

Wednesday, September 30, 2020

Coronavirus Pandemic – An Update

The Black Death

In previous posts I have looked at the impact of plague and pestilence on the world and on Britain and Ireland in particular.  The bubonic plague, more commonly known as the Black Death, arrived on the shores of Europe in October 1347 and claimed an estimate of over 75 – 200 million lives in Eurasia.

The so-called Spanish flu, which raged from 1918 to 1920, infected 500 million people around the world. It became a pandemic on three different occasions and killed 40 million between 1918 to 1919. Medical progress and vaccination development followed helping to control and combat the spread of the virus.

Coronavirus

Coronavirus

Today, the world's coronavirus death toll exceeded one million, with the US, Brazil and India making up nearly half of the total. More than 33 million cases have been confirmed around the world. 

 The virus, which causes the respiratory infection Covid-19, was first detected in the city of Wuhan, China, in late 2019. The outbreak spread quickly across the globe in the first months of 2020 and was declared a global pandemic by the WHO on 11 March. 

World Picture 
Coronavirus is continuing its spread across the world and countries that managed to suppress the initial outbreaks are now seeing infections rise again. The World Health Organization (WHO) has warned that the global total could hit two million before an effective vaccine is widely used. In India, the official number of confirmed infections has reached six million, the second highest in the world after the US.

United States 
Cases of coronavirus are surging in 21 different US states. The number of cases in these states increased by at least 10% in the last week, compared to the week before. The US has recorded more than seven million cases of the virus, more than a fifth of the world's total. With more than 200,000 deaths, the US also has the world's highest death toll. 

Other countries that have seen a resurgence of the virus include Russia, Peru, South Korea, Canada, and Australia - although following the reintroduction of tougher restrictions some of these are now seeing cases fall again. 


Economic Impact 
Governments across the world have been forced to restrict public movement and close businesses and venues to try and slow the spread of the virus. This has had a devastating impact on the global economy. The Organization for Economic Cooperation and Development (OECD) estimates that damage to the world's major economies is four times worse than the 2009 global financial crisis. 

Vaccine 
Most the world's population is still vulnerable to the virus. There are around 40 different coronavirus vaccines currently in clinical trials including one being developed by the University of Oxford that is already in an advanced stage of testing. Trials of the Oxford vaccine show it can trigger an immune response. 

 Most experts think a vaccine is likely to become widely available by mid-2021. Scientists are optimistic that, if trials are successful, a small number of people may be vaccinated before the end of this year. It is thought that 60-70% of people needed to be immune to the virus to stop it spreading easily.

Conclusion

As the number of new coronavirus infections and deaths continue to grow, life has changed radically. Quarantine measures have been imposed to try and limit the spread of the disease as in previous centuries. Throughout history, plagues and diseases have returned in waves, sometimes with even greater ferocity. High hopes hang on the early development of a vaccine and effective treatments but this by no means certain.

For more information please see:

https://letterfromballinloughane.blogspot.com/2020/03/plague-and-pestilence-past-and-present.html

https://letterfromballinloughane.blogspot.com/2020/04/the-black-death-in-ireland.html


Friday, July 31, 2020

Plague and Pestilence – Lessons from History


In previous posts I have looked at the impact of plague and pestilence on the world and on Britain and Ireland in particular. Some four months after the start of lock-down and with no end to the coronavirus pandemic in sight, what can we learn from history?

On March 11, 2020, the World Health Organization (WHO) announced that the COVID-19 virus was officially a pandemic after spreading to 114 countries in three months. By the end of March, over 823,566 people had been infected and the global death toll touched 40,643. In Britain, the total number of deaths was 1,789.

At the end of July 2020, there are now more than 300,000 confirmed cases of coronavirus in the UK and over 45,000 people have died although the true figures are likely to be higher. Confirmed cases are now starting to rise again prompting talk of a second wave. This is what happened with Spanish Flu after the First World War when a second wave proved deadlier than the first. While levels of infection are far below their peak, the most recent seven-day average for cases in the UK is 725 - a rise of 25% since 15 July.

The WHO prefers to describe the current situation as "one big wave" making its way across the globe. Prof Paul Hunter, at Norwich Medical School, says for it to be a second wave the virus would have to have gone away completely, so he calls it a "resurgence”.

The UK has the highest official death toll in Europe and the third highest in the world, after the US and Brazil. However, both countries have much larger populations than the UK and the number of people who have died per 100,000 people in the UK is currently higher than for either the US or Brazil.

At least another 130,000 people worldwide have died during the coronavirus pandemic on top of 440,000 officially recorded deaths from the virus, according to BBC research. These so-called "excess deaths", the number of deaths above the average for the period, suggest the human impact of the pandemic far exceeds the official figures reported by governments around the world. The number of deaths in the United Kingdom has been 43% higher than average, with about 64,500 more people dying than usual in the period 7th March to 5th June. So, what can we learn from previous pandemics?

The deadliest plagues are not necessarily the most successful in terms of spread. Between 430 and 426 BC the Plague of Athens was so virulent that it killed off its hosts at a rate faster than it could multiply which prevented the wider spread.

The Black Death

The bubonic plague, more commonly known as the Black Death, arrived on the shores of Europe in October 1347 and claimed an estimate of over 75 – 200 million lives in Eurasia. Thanks to the horrors of the plague, better hygiene practices and a push for medical advancements followed. The disease recurred in England every two to five years from 1361 to 1480. By the 1370s, England's population was reduced by 50%. 

The Deadly Bacteria behind the Bubonic Plague, Yersinia pestis, was present in black rats and other rodents and is thought to have been transmitted by parasites living in/on these animals, especially fleas. In medieval Europe one of the main predators of the black rat was the cat, domesticated by the ancient Egyptians and introduced on the continent by the Phoenicians in the ninth century BC. Since then cats lived with humans and served a role by keeping away rats and other rodents.

In the early thirteenth century Pope Gregory IX declared that “The evil black cat had fallen from the clouds bringing unhappiness to man.” Medieval citizens began to believe that it was safer to exterminate cats – especially the black ones. With the passage of time, there was an almost widespread killing of cats in many parts of Europe. The result of this extermination was the rapid increase of rodents, particularly the "black rat", the main transmitter of the deadly Black Plague. 

A new study carried out by researchers at the University of Oslo suggests that because black rats may not be to blame for the outbreak of the bubonic plague in Europe after all. According to the research team, repeated plague epidemics were caused by another rodent: the gerbilino or gerbil from Asia. Too late, alas, for the 200,000 or so cats that gave their lives in the interests of public health. 

Modern sanitation and public-health practices have greatly diminished the impact of the disease but have not eliminated it. Although antibiotics are available to treat the Black Death, according to The World Health Organization, there are still 1,000 to 3,000 cases of plague every year.

Spanish Influenza

The so-called Spanish flu, which raged from 1918 to 1920, infected 500 million people around the world. It became a pandemic on three different occasions and killed 40 million between 1918 to 1919. Medical progress and vaccination development followed helping to control and combat the spread of the virus. 

Asian flu -1957

Starting in Hong Kong in 1957, the Asian flu became widespread in England where, over six months, 14,000 people died. A second wave followed in early 1958, causing an estimated total of about 1.1 million deaths globally. A vaccine was developed, effectively containing the pandemic.

HIV/AIDS - 1981

First identified in 1981, AIDS destroys a person’s immune system, resulting in eventual death by diseases that the body would usually fight off. Treatments have been developed to slow the progress of the disease, but 35 million people worldwide have died of AIDS since its discovery, and a cure is yet to be found.

2003: SARS

In 2003, Severe Acute Respiratory Syndrome (SARS) infected 8,096 people and resulted in 774 deaths. Quarantine efforts proved effective and by July, the virus was contained and has not reappeared since.

Conclusion

As the number of new coronavirus infections and deaths continue to grow, life has changed radically. Quarantine measures have been imposed to try and limit the spread of the disease as in previous centuries. Throughout history, plagues and diseases have returned in waves, sometimes with even greater ferocity. High hopes hang on the early development of a vaccine and effective treatments but this by no means certain. Meanwhile, the likely impact of the pandemic on the world economy scarcely bears thinking about. These are unprecedented times for everyone, but the one thing we must not lose is hope.

For more information see:

(1) https://letterfromballinloughane.blogspot.com/2020/03/plague-and-pestilence-past-and-present.html

(2)  https://letterfromballinloughane.blogspot.com/2020/04/the-black-death-in-ireland.html

(3) https://www.ancient-origins.net/history-important-events/black-death-plague-sowed-terror-and-death-medieval-europe-part-2-003822


Tuesday, March 31, 2020

Plague and Pestilence - Past and Present

In 2014, I wrote a blog post about Ireland’s ringforts. Some scholars believe that these ancient sites may owe their origin to changes in the environment.  It is possible that periods of poor weather may have led to poor harvests, shortages of food, famine, lowering of resistance to disease and vulnerability to widespread pestilences. When I wrote this piece, little did I think that the world would face, in just a few short years, its greatest pandemic in a century known as coronavirus or Covid19.
Justinian Plague
Justinian Plague - 541 AD
The first historic plague (the Justinian, named after the emperor who was infected by it) was an outbreak of bubonic plague, which came to Ireland in AD 544 and decimated the people over several years. Several other pestilences are recorded from the mid-500s. Another severe outbreak of plague hit Ireland in 664. These may have played a part in the sudden desire of those who survived and could afford to do so, to secure themselves in ringforts.  (Lynne, C., Archaeology Ireland, Winter 2005). Experience of the first plague may have shown that small isolated communities had a better chance of avoiding infection.
Further outbreaks over the next two centuries eventually killed about 50 million people, 26 percent of the world population. It is believed to be the first significant appearance of the bubonic plague. Plague and pestilence, of course, have been part of the human experience going back to pre-historic times. Malaria, tuberculosis, leprosy, influenza, smallpox and others first appeared 10,000 years ago during the hunter-gatherer period. As our ancestors built cities, forged trade routes and waged war, pandemics became more common. The website www.history.com is a good source of information on the history of plagues.
The Black Death
Black Death 
The Black Death, also known as the Pestilence, Great Bubonic Plague, the Great Plague or the Plague, or less commonly the Great Mortality or the Black Plague, was the most devastating pandemic recorded in human history. This pandemic resulted in the deaths of an estimated 75 to 200 million people in Eurasia, peaking in Europe from 1347 to 1351. The bacterium Yersinia pestis, is believed to have been the cause.
The plague appeared in Europe in October 1347, when 12 ships from the Black Sea berthed at the Sicilian port of Messina. Most sailors aboard the ships were dead, and those still alive were gravely ill. Healthy people did all they could to avoid the sick. Doctors refused to see patients; priests refused to administer last rites; and shopkeepers closed their stores.
In 1348, soon after the plague arrived in cities like Venice and Milan, city officials put emergency public health measures in place that foreshadowed today’s best practices of social distancing and disinfecting surfaces. The Black Death epidemic had come to an end by the early 1350s, but the plague reappeared every few generations for centuries. Modern sanitation and public-health practices have greatly diminished the impact of the disease but have not eliminated it. Although antibiotics are available to treat the Black Death, according to The World Health Organization, there are still 1,000 to 3,000 cases of plague every year.
Significance of a 40-Day 'Quarantino'
The English word “quarantine” is a direct descendent of quarantino, the Italian word for a 40-day period. Health officials may have prescribed a 40-day quarantine because the number had great symbolic and religious significance to medieval Christians.
By the early 1500s, England enacted the first laws to separate and isolate the sick. Homes stricken by plague were marked with a bale of hay strung to a pole outside. If you had infected family members, you had to carry a white pole when you went out in public.
The Great Plague of London -1665
In 1665, another devastating outbreak of the bubonic plague led to the deaths of 20 percent of London’s population. As human death tolls mounted and mass graves appeared, hundreds of thousands of cats and dogs were slaughtered as the possible cause and the disease spread through ports along the Thames. The Great Plague was the last and one of the worst of the centuries-long outbreaks, killing 100,000 Londoners in just seven months.
Spanish Flu - 1918
The avian-borne Spanish flu was a deadly influenza pandemic lasting from January 1918 to December 1920 which resulted in 50 – 100 million deaths worldwide.  It was first observed in Europe, the United States and parts of Asia, before quickly spreading around the world. At the time, there were no effective drugs or vaccines to treat this killer flu strain.
Asian flu -1957
Starting in Hong Kong in 1957 and spreading throughout China and then into the United States, the Asian flu became widespread in England where, over six months, 14,000 people died. A second wave followed in early 1958, causing an estimated total of about 1.1 million deaths globally. A vaccine was developed, effectively containing the pandemic.
HIV/AIDS - 1981
First identified in 1981, AIDS destroys a person’s immune system, resulting in eventual death by diseases that the body would usually fight off. AIDS was first observed in American gay communities but is believed to have developed from a chimpanzee virus from West Africa in the 1920s. Treatments have been developed to slow the progress of the disease, but 35 million people worldwide have died of AIDS since its discovery, and a cure is yet to be found.
 SARS - 2003
In 2003, after several months of cases, Severe Acute Respiratory Syndrome (SARS) is believed to have started with bats, spread to cats and then to humans in China, followed by 26 other countries. The disease infected 8,096 people and resulted in 774 deaths. Quarantine efforts proved effective and by July, the virus was contained and hasn’t reappeared since.
Coronavirus - COVID-19
COVID-19 - 2019
On March 11, 2020, the World Health Organization announced that the COVID-19 virus was officially a pandemic after spreading to 114 countries in three months. By the end of March, over 823,566 people had been infected and the global death toll reached 40,643. In Britain, the total number of deaths reached 1,789. COVID-19 is caused by a novel coronavirus, the family of viruses that includes the common flu and SARS. Symptoms include respiratory problems, fever and cough, and can lead to pneumonia and death.
The first reported case in China appeared November 17, 2019, in the Hubei Province, but went unrecognized. Eight more cases of this still unidentified virus appeared in December.  Without a vaccine available, the virus spread beyond Chinese borders and by mid-March, it had spread globally to more than 163 countries. 
For further information see:
https://letterfromballinloughane.blogspot.com/2014/10/irelands-ringforts-not-just-home-for.html
https://www.youtube.com/watch?v=kScxc9DPrnY