[1] Panama (Herrera) 
Date: Thu 24 Nov 2022 
Source: Outbreak News Today [edited] 

Vector control inspectors, in conjunction with health promoters from
the province of Herrera, carried out an orientation day in the
community of El Barrero, district of Pesé, after the confirmation of
a case of hantavirus fever. The patient is a 32 year old female
resident, who is under medical care at the Dr Gustavo Nelson Collado
hospital, in Chitré, in a stable condition. 

The province has recorded a total of 3 cases of hantavirus in 2022, of
which 2 patients developed cardiopulmonary syndrome and one patient
hantavirus fever. 

communicated by: 
ProMED rapporteur Mahmoud Orabi 

[Herrera province reported cases of hantavirus infections earlier this
year (2022) (see Hantavirus - Americas (30): Panama (LS)
http://promedmail.org/post/20221012.8706113). The virus is endemic in
the province and cases are reported there frequently. Although the
above and the previous reports do not indicate which hantavirus is
responsible for these cases, an earlier WHO report indicates that,
based on genomic sequence analysis, Choclo is the hantavirus
identified in those previous cases (see Hantavirus - Americas (02):
Panama WHO 2018 review http://promedmail.org/post/20190106.6245148).
Curiously, Choclo virus is never mentioned in the popular press
reports that come to ProMED from Panama, including this one. It is
reassuring to know that the virus responsible for the cases described
in the WHO report mentioned above -- or at least the ones for which
samples and diagnostic testing were done -- was Choclo virus, which
confirms the ProMED conclusion. 

Earlier, Dr Jan Clement suggested that Seoul hantavirus might be
involved in some of the cases in the Americas, including Panama. The
rodent reservoir of Seoul virus is the ubiquitous brown rat (_Rattus
norvegicus_). Presumably, genomic analysis by the Gorgas Lab would
have detected this virus. Nonetheless, diagnostic laboratories should
be aware of this possibility and look for it. 

The rodent host of Choclo virus is the pygmy rice rat (_Oligoryzomys
fulvescens_), a photograph of which can be seen at
These rodents live in and around agricultural areas and adjacent
houses and buildings. They can be persistently infected with the virus
and shed it in urine, feces, and saliva, the source of human
infection. - Mod.TY] 

[2] Chile (Los Lagos) 
Date: Sun 20 Nov 2022 
Source: Cooperativa [in Spanish, trans. Mod.TY, edited] 

The Los Lagos SEREMI [Secretaria Regional Ministerial de Salud;
regional health ministerial secretariat] is investigating the death of
a 39 year old man from the Quemchi commune, in Chiloé Province, which
is thought to have been due to a hantavirus [infection]. 

The [affected] person, from Tac Island, has been in hospital since 15
Nov 2022 in the intensive care unit of the Castro Hospital. However,
due to his complicated condition, it was decided to move him to the
Las Higueras Hospital in Talcahuano, which did not happen because he
died from causes that are still being investigated. 

The acting health minister of Los Lagos, Álex Oyarzo, reported that
the case, given the associated conditions, "corresponds to suspected
hanta [infection]. However, other causes of respiratory origin have
not been ruled out. Our epidemiology team continues to collect all the
background information on the case and coordinate the confirmation of
the diagnosis," which will be established by the Institute of Public

The population of Tac barely reaches 300 people. Irene Millalonco, the
president of the neighborhood council, said that they are "very
concerned and sad about the situation on the island, because it covers
the entire island, and we had no idea what was coming. He left due to
a fever and we have no more information than what the doctor
predicted. He is a dear friend and leader of the island, so we are
very sorry," she ended. 

communicated by: 
ProMED rapporteur Mahmoud Orabi

[Tac Island is relatively near the Andean mainland. Hantavirus
infections occur in a broad Andean region of Chile every year. This
case is in the Los Lagos region. Although not specified in this or
previous reports from this and other regions, the hantavirus involved
in this case is most likely Andes virus. This virus is endemic in
Chile. The patient likely came into contact with areas inhabited by
the rodent reservoir of the virus in the region, which is why the Los
Lagos Health authorities are investigating the situation on the

Andes virus is rarely transmitted directly from person to person and
only through close physical contact, usually within the family. The
most common source of the infection is the long-tailed pygmy rice rat.
Images of the long-tailed pygmy rice rat (_Oligoryzomys
longicaudatus_), the Sigmodontine rodent host of Andes hantavirus, can
be seen at
- Mod.TY

ProMED maps:
Herrera, Panama:
Los Lagos, Chile:

[See Also:
Hantavirus - Americas (34): Chile (LI)
Hantavirus - Americas (31): Panama (HE)
Hantavirus - Americas (30): Panama (LS)
Hantavirus - Americas (29): Panama (VR)
Hantavirus - Americas (20): Chile (NB)
Hantavirus - Americas (04): Chile (LG, NB)