- After almost three years of trying to wholly eliminate the virus that causes Covid-19 from within its borders, the Chinese government has abruptly changed course.
- Now, the country is attempting to “live with Covid-19”
- Testing is no longer required, and numbers of officially reported Covid-19 cases are at odds with scientific estimates of the situation.
While official estimates suggest there are 4,000 cases of Covid a day, scientists estimate the number is more like 1 million. Official death tolls are similarly unreliable. The lack of transparency from the Chinese government, and the lack of trust in what it’s saying about its domestic outbreak, has prompted concern across the world.
Strict Check On Flights
The US, Italy, Japan, Taiwan and India are among the countries that have already introduced strict checks on flights coming from China. The UK also now has a requirement for travelers from China to England to provide a pre-departure negative test. In addition, the UK Health Security Agency will soon start monitoring a sample of passengers to keep track of any new variants arriving. These new policies in the west follow a period of largely “getting back to normal”. They’ve triggered a debate about whether testing travelers arriving in a country is a useful strategy, or simply performative.
The first point of testing is to identify positive cases to stop further transmission. Providing evidence of a negative test before boarding a flight will mean there are fewer positive cases on flights and therefore fewer arriving into a country. Today, however, Covid-19 is endemic across Britain and the US. This doesn’t mean it is harmless, but it does mean that case numbers are unlikely to be affected by new imported cases.
The second purpose of testing is to detect new variants that could be more transmissible, evade existing immunity by reinfecting people quickly, or cause more severe illness. While it’s impossible to completely stop the spread of a new variant, quickly detecting a new strain can help delay its spread and provide valuable data on how best to respond to a changing situation.
Wastewater Testing
Surveillance can also be done through wastewater testing on international aircraft. Wastewater that is flushed down plane toilets would indicate what variants passengers may have had, and doesn’t require individual-level data. Plane wastewater has already been used to show that – even when negative tests are presented pre-departure – there are positive Covid-19 cases among the passengers. It’s been three years since the World Health Organization first alerted the world to a new cluster of cases in Wuhan, and most countries are finding a way to live with Covid-19 through a combination of vaccines and major waves of infection.
Could a variant emerge that would change the entire picture? It seems unlikely, but we need to constantly assess the situation based on new data, and respond with suitable policies. We can’t live in a constant state of panic and worry, but we can prepare, plan and lay the groundwork for a rapid response to future health risks. As we head into 2023, the center of the pandemic has returned to China. Covid-19 has been a global hurricane, causing damage as it has torn across the world.
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Source: Theguardian
