GBS can follow bacterial or viral infections, and, rarely, follow vaccination.
mRNA COVID-19 vaccination halved the risk of Guillain-Barre.
The WHO said more investigations are needed to the rise in GBS cases, though some patients tested positive for Campylobacter infection.
PAHO says 191 cases of Guillain-Barre syndrome have been recorded, 4 of them fatal.
A large UK epidemiologic study finds no association with GBS, which has been a concern.
Health officials in Saudi Arabia today reported another MERS-CoV case, which involves a 70-year-old man from Medina who had recent contact with camels.
The country's Ministry of Health (MOH) classified the patient's illness as primary, meaning he likely didn't contract MERS-CoV (Middle East respiratory syndrome coronavirus) from another patient. Contact with camels is a known risk factor for contracting the disease.
Researchers today reported a case series of four babies with congenital Zika infections who were born with right unilateral diaphragmatic paralysis, suggesting that the virus can cause additional damage in the peripheral nervous system. A team from the Mayo Clinic and Brazil published its findings in Emerging Infectious Diseases.
Those with GBS and Zika had more severe symptoms, including facial weakness, and required more ICU care.
The Saudi Arabian Ministry of Health (MOH) reported two new cases of MERS-CoV yesterday and today.
Yesterday, a 37-year-old Saudi man from Al Hofuf was diagnosed as having MERS-CoV (Middle East respiratory syndrome coronavirus). He is in critical condition. The MOH said the source of his infection was primary, meaning he likely did not contract the disease from another person.
Older adults were hardest hit by Guillain-Barre syndrome in northeast Brazil.
