2022

"New ultra-contagious Omicron subvariants BA.4, BA.5"


The Los Angeles Times interviewed Dr. Paul Simon about two new ultra-contagious Omicron subvariants among COVID-related infections.

COVID-19 cases in the United States

The growing dominance of two new ultra-contagious Omicron subvariants is prolonging a wave of coronavirus cases in California and sparking growing concerns from health officials that coming weeks could see significant spread and increased hospitalizations.

BA.4 and BA.5 are now believed to be responsible for most new infections nationwide. The strains are of particular concern because they are not only especially contagious but also capable of reinfecting those who have survived earlier Omicron infection.

When it comes to BA.4 and BA.5, their “superpower is reinfection,” said Dr. Peter Chin-Hong, a UC San Francisco infectious-disease expert.

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Faculty Referenced by this Article

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Paul Simon
Epidemiology
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Nathan Wong
Nathan D. Wong
Epidemiology
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Susan Cochran
Susan Cochran
Epidemiology
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Jian Li
Jian Li
Environmental Health Sciences Epidemiology
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Haroutune Armenian
Haroutune Armenian
Epidemiology
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Vonthanak Saphonn
Epidemiology
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Leeka I. Kheifets
Epidemiology
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Julia Heck
Julia Heck
Epidemiology
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Dr. Brian Bradbury
Brian Bradbury
Epidemiology
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Robert Kim-Farley
Robert J. Kim-Farley

Robert J. Kim-Farley, MD, MPH, is a Professor-in-Residence with joint appointments in the Departments of Epidemiology and Community Health Sciences

Community Health Sciences Epidemiology
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Dr. Paul Hsu
Paul Hsu
Epidemiology
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Teresa Ellen Seeman
Epidemiology
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Pamina Gorbach
Pamina Gorbach
Epidemiology
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Kamyar Kalantar-Zadeh
Kamyar Kalantar-Zadeh
Epidemiology
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Tony Kuo
Tony Kuo
Epidemiology
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Roch Nianogo
Roch A. Nianogo
Epidemiology
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Sheena G. Sullivan
Epidemiology
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Jonathan Jacobs
Jonathan Jacobs
Epidemiology
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Peter R. Kerndt
Epidemiology
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DerSarkissian, Maral
Maral DerSarkissian
Epidemiology
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Otoniel Martinez-Maza
Otoniel Martinez-Maza
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Anne Coleman
Anne Coleman
Epidemiology
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Jørn Olsen
Epidemiology
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Najib Aziz
Epidemiology
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Elizabeth Rose Mayeda
Epidemiology
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Lawrence Ash
Epidemiology
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Dr. Roger Detels
Roger Detels
Epidemiology
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Ximena Vergara
Ximena Vergara
Epidemiology
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Zuo-Feng Zhang
Epidemiology
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Christie Jeon
Epidemiology
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Emily Beeler
Epidemiology
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Jian Yu Rao
Epidemiology
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Catherine Carpenter
Epidemiology
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Ondine S. von Ehrenstein
Community Health Sciences Epidemiology
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Karin Michels
Karin B. Michels
Epidemiology
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Amy Wohl
Epidemiology
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Timothy Brewer
Epidemiology
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Annette Regan
Epidemiology
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Roberta Malmgren
Epidemiology
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Dr. Liwei Chen
Liwei Chen

Professor in Epidemiology

Epidemiology
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Dr. Shira Shafir
Shira Shafir
Community Health Sciences Epidemiology
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Noel Weiss
Epidemiology
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Sander Greenland
Sander Greenland
Epidemiology
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Peter Katona
Epidemiology
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Bailley, Julia
Julia Bailey
Epidemiology
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Dr. Anne Rimoin
Anne Rimoin
Epidemiology
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Paul Dluzniewski
Epidemiology
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Niklas Krause
Environmental Health Sciences Epidemiology
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Nicole Hoff
Epidemiology
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Sung-Jae Lee
Sung-Jae Lee
Epidemiology
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Kelika Konda
Epidemiology
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Su Yong Jung
Su Yon Jung
Epidemiology
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Marissa J. Seamans
Marissa Seamans
Epidemiology
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Akihiro Nishi
Epidemiology
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Dr. Marjan Javanbakht
Marjan Javanbakht
Epidemiology
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Alexandra Binder
Epidemiology
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Naomi Greene
Naomi Greene
Epidemiology
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Onyebuchi A. Arah
Epidemiology
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Nina Harawa
Epidemiology
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Dallas Swendeman
Epidemiology
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Jody Heymann
Jody Heymann
Epidemiology Health Policy and Management
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Lisa V. Smith
Epidemiology
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Matthew Mimiaga
Matthew J. Mimiaga
Epidemiology
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Ralph R. Frerichs, 12/25/21
Ralph R. Frerichs
Epidemiology
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Dr. Dvora Joseph Davey
Dvora Joseph Davey

Dr. Joseph Davey is an infectious disease epidemiologist with over 20 years' experience leading research on HIV/STI services for women and children.

Epidemiology
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Dr. Beate Ritz
Beate Ritz
Environmental Health Sciences Epidemiology
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Frank J. Sorvillo
Epidemiology
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Mia Hashibe
Epidemiology
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