welcome to our viewers on pbs in america and around the globe. fbi director, christopher wray, says it s most likely that covid 19 emerged from a chinese government controlled laboratory in wuhan. in response, china has accused the fbi of politicising the investigation into the origins of coronavirus, and says there has been no new scientific evidence to support the theory. other us agencies believe the virus developed naturally. our north america correspondent john sudworth reports. suspicions have long swirled around wuhan s laboratories. now three years after the start of the pandemic, they have burst out into the open once again. the fbi has for quite some time now assessed that the origins of the pandemic are most likely a potential lab incident in wuhan. here, you are talking about a potential leak from a chinese government controlled lab that killed millions of americans. from the start, many scientists believed that covid had passed naturally from animals to humans.
from the start, many scientists believed that covid had passed naturally from animals to humans. some of the first cases were centred around this wuhan s market known to sell wildlife. but with wuhan s laboratories known to have been collecting samples from bats and experimenting on coronaviruses, there is an alternative possibility, that a researcher became accidentally infected with the virus they were working on. it comes from china, that s why. it comes from china. i want to be accurate. but the theory s close association with donald trump made it for many one more piece of disinformation and it was widely dismissed. for the past three years in china, in europe and now in america, i have been investigating the question of covid s origin. some scientists claim the lab leak theory has been convincingly debunked but others say that in the absence of better evidence to rule it out,
government controlled lab that killed millions of americans. from the start, many scientists believed that covid had passed naturally from animals to humans. some of the first cases were centred around this wuhan s market known to sell wildlife. but with wuhan s laboratories known to have been collecting samples from bats and experimenting on coronaviruses, there is an alternative possibility, that a researcher became accidentally infected with the virus they were working on. it comes from china, that s why. it comes from china. i want to be accurate. but the theory s close association with donald trump made it for many one more piece of disinformation and it was widely dismissed. for the past three years in china, in europe and now in america, i have been investigating the question of covid s origin.
likely a potential lab incident in wuhan. here, you are talking about a potential leak from a chinese government controlled lab that killed millions of americans. from the start, many scientists believed that covid had passed naturally from animals to humans. some of the first cases were centred around this wuhan s market known to sell wildlife. but with wuhan s laboratories known to have been collecting samples from bats and experimenting on coronaviruses, there is an alternative possibility, that a researcher became accidentally infected with the virus they were working on. it comes from china, that s why. it comes from china. i want to be accurate. but the theory s close association with donald trump made it for many one more piece of disinformation and it was widely dismissed. for the past three years
other us agencies believe the virus developed naturally. our north america correspondent john sudworth reports. suspicions have long swirled around wuhan s laboratories. now, three years after the start of the pandemic, they ve burst into the open once again. the fbi has for quite some time now assessed that the origins of the pandemic are most likely a potential lab incident in wuhan. here you re talking about a potential leak from a chinese government controlled lab that killed millions of americans. from the start, many scientists believed that covid had passed naturally from animals to humans. some of the first cases were centred around this wuhan market known to sell wildlife. but with wuhan s laboratories known to have been collecting samples from bats and experimenting on coronaviruses there s an alternative possibility that a researcher became accidentally infected with the virus they were working on.