The CDC's latest weekly "Morbidity and Mortality" report included a study of 113 people with mpox who traveled on 221 flights during 2021-22.
The results showed that none of the 1,046 passenger contacts were infected.
"Among 1,046 traveler contacts followed by US public health agencies, CDC identified no secondary cases," the report said.
The findings suggest that "traveling on a flight with a person with mox does not appear to constitute an exposure risk nor justify routine contact tracing activities."
However, the CDC recommends that people with mpox infections isolate themselves and delay travel until they are no longer contagious.
Meanwhile, the CDC also noted that regardless of the variants, the findings apply to MPXV and that both clade I and clade II mpox spread in the same way.
Primarily, it spreads through physical or intimate contact with people infected with mpox lesions and "less commonly through infectious respiratory secretions and fomites," the CDC said.
This comes as the current outbreak is primarily driven by clade 1b, which has historically been associated with increased transmissibility.
Mpox, which is currently spreading rapidly in Africa and infecting both adults and children, has been declared a global health emergency by the World Health Organization (WHO). It is also increasing deaths, especially among children, raising concerns about airborne transmission.
"However, the situation is different during close contact, where respiratory droplets could still play a role," said Dr. Rajeev Jayadevan, co-chair of the Indian Medical Association's National Covid-19 Task Force, in a post on x.
Outside Africa, mpox clade 1b has spread to Sweden and Thailand, with one case reported so far in each.
The results showed that none of the 1,046 passenger contacts were infected.
"Among 1,046 traveler contacts followed by US public health agencies, CDC identified no secondary cases," the report said.
The findings suggest that "traveling on a flight with a person with mox does not appear to constitute an exposure risk nor justify routine contact tracing activities."
However, the CDC recommends that people with mpox infections isolate themselves and delay travel until they are no longer contagious.
Meanwhile, the CDC also noted that regardless of the variants, the findings apply to MPXV and that both clade I and clade II mpox spread in the same way.
Primarily, it spreads through physical or intimate contact with people infected with mpox lesions and "less commonly through infectious respiratory secretions and fomites," the CDC said.
This comes as the current outbreak is primarily driven by clade 1b, which has historically been associated with increased transmissibility.
Mpox, which is currently spreading rapidly in Africa and infecting both adults and children, has been declared a global health emergency by the World Health Organization (WHO). It is also increasing deaths, especially among children, raising concerns about airborne transmission.
"However, the situation is different during close contact, where respiratory droplets could still play a role," said Dr. Rajeev Jayadevan, co-chair of the Indian Medical Association's National Covid-19 Task Force, in a post on x.
Outside Africa, mpox clade 1b has spread to Sweden and Thailand, with one case reported so far in each.
