(Image: KPBS)

China notified the World Health Organisation on 31 December 2019 of a series of “pneumonia-like” cases popping up in Wuhan, however it took some time for peripheral parts of the country to get wind of the burgeoning health crisis. Information from the government, when it did come, was pretty sketchy in the early stages of the outbreak. Soon after Chinese migrant workers began returning home from Wuhan, rumours of what might have caused the virus started to circulate in the regions.

Zoonotic source
As the infection rates in Wuhan and Hubei province started to steeple in early February, there was lots of speculations about animal transmission to coronavirus’ “Patient Zero”. Civets, snakes, seafood, wolf cubs, rats—all live wildlife sold at the Wuhan ‘wet’ markets—got mentions as possible candidates for transmission. The story most heard and retold at the time was that it was bats that had transmitted the pathogen to humans at the Hua’nan markets⌧  (‘How It All Started: China’s Early Coronavirus Missteps’, (J Page, WX Fan & N Khan), WSJ, 06-Mar-2020), www.wsj.com). The Rhinolophus bat (Horseshoe bat) has been identified as the specific type of bat likely to have carried the infection (‘Coronavirus animal origin’, Crikey, 16-Apr-2020, www.crickey.com.au). A few weeks later there was a new prime suspect – the pangolin, the world’s most trafficked mammal. Chinese virologists⚘ had traced the virus to pangolins being sold at those same seafood markets in Wuhan (‘Mystery deepens over animal source of coronavirus’, (David Cyrenoski), Nature, 26-Feb-2020, www.nature.com).

 (Image: Frans Lanting / National Geographic)

The inevitable conspiracy theories: Genetically-engineered virus
Since February China and the US have exchanged accusations that Covid-19 was deliberately created as a biological weapon—all without foundation (‘No, COVID-19 Coronavirus Was Not Bioengineered. Here’s The Research That Debunks That Idea’,  (Bruce Y Lee), Forbes, 17-Mar-2020, www.forbes.com). Chinese officials have also made the wild claim that the US Army brought the virus to Wuhan when it participated in the Military Games in the city in October last year. 

🔺 Wuhan markets (Photo: NOEL CELIS /AFP via Getty Images)

Over the last couple of months, another story disseminated by southern Republicans has been doing the rounds of the conservative media in America. It espouses the view that coronavirus originated not from a wet market but from a biosafety lab in Wuhan (Wuhan Institute of Virology), from an accidental leakage. Again this view is bereft of any hard evidence to support it but this hasn’t stopped President Trump and his allies at Fox from seizing on it!✱ (“’Biological Chernobyl’: How China’s secrecy fueled coronavirus suspicions”, (Q Forgey, D Lippmann, N Bertrand & L Morello), Politico, 17-Apr-2020, www.politico.com).

While Covid-19 continues to wreak its trail of carnage worldwide, media and social media platforms will no doubt continue to throw up theories about the causes but until China releases the clinical and epidemiological data on the Wuhan outbreak,  the pandemic’s precise origin cannot be scientifically determined (Politico).

🔺 Exporting America’s homegrown “Gates-gate”conspiracy – ‘Covidiocy‘ to Melbourne
(Photo: AAP/Ricky Barbour)

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⌧ bats are major reservoirs of many viruses, and prevalent in both the SARS and MERS outbreaks
⚘ scientific evidence for the pangolin as the culprit is based on a high match of its genome sequencing with that of SARS-CoV-2, however the research remains unpublished and therefore unreviewed; it is thought that pangolins may have been intermediate hosts for the disease …
bat ⇝ pangolin ⇝ human
✱ these are only the less implausible theories, a raft of other ludicrous and wacky conspiratorial notions have been floated purporting to explain the epidemic’s genesis – ranging from Bill Gates having manufactured the virus to establish  himself as the ‘Czar’ of US health care, to Covid-19 being caused by the installation of the 5G cellphone network (‘Coronavirus spawns conspiracy theories’, (David Knowles), Yahoo!news, 18-Apr-2020, www.yahoonews.com)