Mosquitoes

Hanson refers to the Academy of Medicine meeting to study epidemics of yellow fever. He rebuts the contention of a Peruvian physician to the absence of yellow fever in the area, noting that the goal of the campaign is to insure against recurrence.

Hanson describes the work of the sanitary campaign against yellow fever in Peru, naming physicians and surveyors.

Hanson states that he does not think there is yellow fever in Bucaramanga and that the purported cases, which he describes, are not yellow fever.

Hanson discusses yellow fever cases in Peru.

Hanson reports on a yellow fever epidemic in Peru. The local newspaper is publishing articles denouncing his sanitary campaign.

Hanson includes the names of medical personnel and the places he has inspected. He mentions the lack of cooperation from locals. He is considering a return to the U.S.

Hanson discusses ways of converting funds into dollars. He reports on field work done by various experts. He mentions funding issues concerning the Peruvian government.

Hanson discusses a yellow fever outbreak in Trujillo. He mentions the difficulty of doing prophylactic work in Lima. He offers his opinions regarding a member of the Panama Canal Health Department and the Peruvian government.

Hanson hopes that there will be no more yellow fever cases after the year 1921. He describes his field work in detail: the use of fish to combat mosquito breeding was very successful but the limited use of containers was difficult to enforce. He praises several inspectors for their good work.

Hanson reports on the investigation of a possible yellow fever case. He describes his field work and discusses personnel matters. He hopes to bring the campaign to an end by the spring of 1922.

Hanson details the progress against yellow fever in Peru, but notes that the situation in Mexico and Central America is more serious than once thought.

Hanson reports on mosquito larvae studies in Peru. He also discusses, at length, administrative and political issues related to his work.

Hanson approves of Carter's paper concerning yellow fever in Australia and Asia. Hanson offers his opinion on the world-wide campaign against yellow fever.

Hanson reports on yellow fever in Colombia. He also discusses financial matters.

Hansen writes about his work in Colombia. He has seen no yellow fever in Bucaramanga, although the Stegomyia index is high there as well as along the Magdelena River. He discusses other diseases he has encountered there and notes Dunn's work with mosquitoes.

Hanson gives an account of his trip to Panama. He mentions a modification of quarantine process. He describes sanitary inspections to various regions of Peru [lists names of personnel]. He expresses concern about the government's funding of workers. The yellow fever campaign is going well, but vigilance is required.

Hanson reports on the yellow fever work in South America. He discusses the irregularity of mail, the effective use of fish for mosquito control, the yellow fever risk of Lima's poorer areas, and public health personnel. Hanson thanks the International Health Board for all of its support to the campaign.

Hanson discusses a yellow fever outbreak on the frontier of Peru. He states that yellow fever cases are declining elsewhere.

Hanson discusses funding issues and a recent yellow fever outbreak.

Hanson discusses the spread of yellow fever in Peru, and the use of fish to control mosquitoes. He also discusses funding issues.