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ORIGINAL RESEARCH article

Front. Public Health, 21 February 2023
Sec. Infectious Diseases: Epidemiology and Prevention
This article is part of the Research Topic World AIDS Day 2022: Putting ourselves to the test: achieving equity to end HIV View all 30 articles

Real-world data in late presentation of HIV infection in Suzhou, China: Results from four consecutive cross-sectional surveys, 2017–2020

\nZhihui Xu&#x;Zhihui Xu1Qiang Shen&#x;Qiang Shen1Di WangDi Wang1Zefeng DongZefeng Dong1Weining HanWeining Han1Runfang TianRunfang Tian1Kai ZhouKai Zhou1Xuerong Ya
Xuerong Ya1*Haiyang Hu
Haiyang Hu2*
  • 1Suzhou Municipal Center for Disease Control and Prevention, Suzhou, China
  • 2Jiangsu Provincial Center for Disease Control and Prevention, Nanjing, China

Objectives: This study aimed to examine the real prevalence of late presentation of HIV infection and to identify factors associated with late HIV presentation among patients with newly diagnosed HIV/AIDS in Suzhou, China.

Methods: Patients with newly diagnosed HIV/AIDS who registered in national AIDS surveillance system from 2017 to 2020 were included in this study. Late presentation (LP) of HIV infection was defined as HIV diagnosis with a CD4 count < 350 cells/μL or an AIDS-defining event. Multivariable logistic regression analyses were used to identify factors associated with LP.

Results: A total of 2,300 patients were enrolled. 1,325 were classified as late presenters, showing a high percentage of 57.6% (95% CI: 54.5–60.7%) and a rise (P = 0.004) over the four-year period. Patients with newly diagnosed HIV/AIDS who were older than 24 years of age (aOR = 1.549, P = 0.001 for 25-39 years; aOR = 2.389, P < 0.001 for 40 years and older), were Suzhou registered residents (aOR = 1.259, P = 0.026), and were from inpatient and outpatient (aOR = 1.935, P < 0.001) were more likely to be late presentation.

Conclusions: This study showed a high percentage and a rise of late presentation of HIV infection among patients with newly diagnosed HIV/AIDS in Suzhou, China, which is a challenge for future prevention and control of AIDS. Targeted measures should be urgently implemented to reduce late HIV diagnosis.

Introduction

Acquired immune deficiency syndrome (AIDS) is a chronic infectious disease caused by human immunodeficiency virus (HIV). By the end of 2020, there were about 37.7 million people living with HIV worldwide, and 1.5 million people became newly infected with HIV in 2020 (1). 27.5 million people were accessing antiretroviral therapy (ART) as of the end of 2020 (1). AIDS will continue to be a major public health focus for a long time to come. In response to it, the United Nations has proposed the goal of ending the AIDS epidemic by 2030, promising to achieve the “three 95%” by 2030, that is, 95% of people infected with HIV will be diagnosed, 95% of people who are diagnosed will have access to ART, and 95% of people who receive ART will have the virus suppressed (2). In this process, the first 95% is the foundation.

There is increasing evidence that early diagnosis and initiation of effective ART control the HIV-related morbidity and mortality (3, 4). The early use of ART reduces the size of the HIV reservoir and ensures that patients who start ART do so while preserving their immune function (5, 6). On the contrary, late presentation of HIV infection is associated with poor immune reconstitution, ART failure, and a higher mortality risk. Late presenters place a huge burden on the health system: they may have transmitted the virus to others because they are less likely to be aware of their infection and they require more medical resources than people diagnosed early (7).

The late presentation of HIV infection was defined by the European Late Presenter Consensus working group as a patient presenting for care with a CD4 count < 350 cells/μL or presenting with an established AIDS-defining event, regardless of the CD4 cell count (8). This definition aims at a coordinated care and unified management approach to AIDS in order to improve the standard of care for late HIV presenters. Another study proposed a definition of advanced patients as patients who present with a CD4 count < 200 cells/μL and/or have an AIDS-defining event within a month after HIV diagnosis, or patients with a first-reported CD4 count < 350 cells/μL or an AIDS-defining event within a month after diagnosis (9). A consensus definition of late presentation of HIV infection was proposed to ensure consistency and standard of care (10).

However, there is no such standard definition to describe the group of people living with HIV who present late with HIV infection in China. At present, Chinese Center for Disease Control and Prevention (China CDC) still uses the following definition to evaluate late presentation of HIV infection: persons who diagnosed with AIDS patients, or diagnosed with HIV infections and progressing to AIDS patients within the current year. AIDS patient is defined as a person presenting with a CD4 count < 200 cells/μL or presenting with an AIDS-defining event, regardless of the CD4 cell count. This definition of late HIV presentation has an obvious limitation that it can be influenced by ART. Moreover, the percentages of late presenters were underestimated because of the index assessment system. In China, a national study showed the percentage of patients with late HIV presentation ranged from 35.5 to 42.1% from 2010 to 2014 (11). In addition, 70.2% of newly diagnosed patients had late HIV presentation (according to the European consensus definition) in Guangxi Zhuang Autonomous Region from 2012 to 2016 (12). Another study showed that 40.1% of newly diagnosed patients were defined as having advanced HIV disease (AHD, was defined as an initial CD4 count < 200 cells/μL or an AIDS-defining event within a month after HIV diagnosis) in Guangdong Province from May 2018 to June 2019 (13).

Suzhou City, is an economically developed region with more than 13 million people, located in the southeastern part of China. Suzhou belongs to Jiangsu Province and is close to Shanghai. Toward the end of 2021, few finding about late HIV presentation had been reported. Herein, we conducted this four-year cross-sectional survey to examine the status of late presentation and identify factors associated with late HIV presentation among patients with newly diagnosed HIV/AIDS in Suzhou, China.

Materials and methods

Study population

All patients with newly diagnosed HIV/AIDS who registered in the AIDS surveillance system of China CDC between January 2017 and December 2020, whose addresses during diagnosis were located in Suzhou city, Jiangsu province, China, were included in this study. Eligible patients also needed to meet the following inclusion criteria: (1) had CD4+ T lymphocyte counts (CD4 counts) during diagnosis, (2) had CD4 counts detected within 3 months after diagnosis, (3) had CD4 counts detected before on antiretroviral therapy (ART). If there were multiple CD4 counts that meet the inclusion criteria, we chose the first into the study.

Study design

Four consecutive yearly cross-sectional observational study was conducted to examine the prevalence and trends in late presentation of HIV infection, and identify factors associated with late presentation among patients with newly diagnosed HIV/AIDS. Socio-demographic data (including gender, age, occupation, marital status, ethnicity, education level, and registered residence), HIV transmission route, reason for HIV testing, and CD4 count, were collected from the AIDS surveillance system of China CDC. CD4 count testing was conducted in the AIDS confirmatory laboratory of Suzhou Municipal Center for Disease Control and Prevention (Suzhou CDC). Subsequently, local CDC staff entered the CD4 count data of patients into the AIDS surveillance system.

Definition

In 2009, the European Late Presenter Consensus working group joined efforts to identify a common definition of what is mean by a ‘late-presenting' patient. Two definitions were agreed upon, as follows. Late presentation: persons presenting for care with a CD4 count < 350 cells/μL or presenting with an AIDS-defining event, regardless of the CD4 cell count. Presentation with advanced HIV disease: presenting for care with a CD4 count < 200 cells/μL or presenting with an AIDS-defining event, regardless of the CD4 cell count (8). In our study, late presentation (LP) and non-LP were distinguished according to the consensus definition of late presentation. That was to say, a late presenter was defined as a patient with a CD4 count < 350 cells/μL or with an AIDS-defining event, regardless of the CD4 count.

Statistical analysis

Related data were downloaded from the AIDS surveillance system. Patients missing CD4 counts that met the inclusion criteria, were disqualified and not included into statistical analyses. According to the distributions of data, the quantitative variables were grouped and part of the qualitative variables were merged. Frequency analyses were used to show the distributions of socio-demographic characteristics and other variables. Chi square tests were used to compare differences of late presentation between subgroups of characteristics. Chi square trend tests were used to compare differences of late presentation between years and observe trends over time. Factors associated with late presentation were first assessed using univariate logistic regression analysis. Variables with P < 0.20 were entered into multivariate regression analysis. Multivariable logistic regression analyses were conducted using forward LR method in order to determine the adjusted odds ratios (aORs). All analyses were conduct using SPSS software (version 19.0). P < 0.05 were considered statistically significant.

Results

Socio-demographic characteristics of study population

A total of 3,096 patients with newly diagnosed HIV/AIDS registered in the AIDS surveillance system of China CDC from 2017 to 2020, whose addresses were located in Suzhou during diagnosis. Among them, 2,300 eligible patients (513, 627, 583, and 577 in 2017, 2018, 2019, and 2020, respectively) were enrolled into the study. There were no statistically significant differences between their socio-demographic characteristics and those of patients who did not meet the inclusion criteria. Their socio-demographic characteristics are summarized in Table 1. The average age of study population was 38.8 with a standard deviation of 14.7 (range: 2–84). Patients aged 24 years or younger during diagnosis constituted 15.0% (346), those aged 25–39 years constituted 45.7% (1,051), and those aged 40 years or older constituted 39.3% (903). Majority of patients were male (89.2%, 2,051) and ethnic Han (96.7%, 2,225). Approximately half (48.7%, 1,120) had an education level of junior high school or lower. About one-third (33.1%, 761) were Suzhou registered residents and two-third (66.9%, 1,539) were migrant population (Table 1).

TABLE 1
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Table 1. Socio-demographic characteristics and late presentation among patients with newly diagnosed HIV/AIDS.

HIV routes of transmission and reasons for HIV testing

Of the 2,300 patients, 61.3% (1,410) were MSM and 38.3% (880) were infected with HIV through heterosexual sex. Patients were tested for HIV for all different kinds of reasons, and then were found to be infected with HIV. Of those, 49.0% (1,127) were from medical institutions [inpatient, outpatient, pre-surgery, and STD (sexually transmitted disease) clinic], and 43.0% (988) from VCT (HIV voluntary counseling and testing) clinics and investigations (Table 1).

Late presentation of HIV infection

The overall median CD4 count was 317 cells/μL [inter-quartile range (IQR): 206–441]. Among 2,300 patients, 1,325 were classified as late presenters according to the definition, showing a high percentage of 57.6% (95% CI: 54.5–60.7%). Of those, higher percentages of patients with late presentation were found in those aged 40 years or older (68.1%), retirees (70.2%), farmers (70.8%), married (64.9%), heterosexuals (63.9%), those with education level of junior high school or lower (61.5%), being registered residence of Suzhou (66.5%), and being from inpatient and outpatient (70.4%) (Table 1).

Trends in late presentation of HIV infection

Over the four-year period, a rise of late presentation of HIV infection was shown (P = 0.004), with 52.8% in 2017, 56.8% in 2018, 59.2% in 2019, and 61.2% in 2020, respectively. Increases of late presentation were noted in the patients who were male (P = 0.003), 25–39 years (P = 0.049), retirees (P = 0.039), married (P = 0.001), had an education level of junior high school or lower (P = 0.046), migrant population (P = 0.007), MSM (P = 0.009), and were from VCT clinics (P = 0.026) (Table 2).

TABLE 2
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Table 2. Trends in late presentation of HIV infection among patients with newly diagnosed HIV/AIDS.

Factors associated with late presentation of HIV infection

The potential factors associated with late presentation of HIV infection were analyzed with not late presenters as control. In the univariate analysis, late presentation was significantly associated with age, occupation, marital status, education level, registered residence, route of HIV transmission, and reason for HIV testing. In the multivariate analysis, the patients with newly diagnosed HIV/AIDS who were older than 24 years of age (aOR = 1.549, 95% CI: 1.209–1.985, P = 0.001 for 25–39 years; aOR = 2.389, 95% CI: 1.815–3.145, P < 0.001 for 40 years and older), were Suzhou registered residents (aOR = 1.259, 95% CI: 1.028–1.543, P = 0.026), and were from inpatient and outpatient (aOR = 1.935, 95% CI: 1.510–2.479, P < 0.001) were more likely to be late presentation (Table 3).

TABLE 3
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Table 3. Univariate and multivariate analysis of factors associated with late presentation of HIV infection.

Discussion

Our study is among the first to examine trends in late presentation of HIV infection over a period of four consecutive years in Eastern China. A slight rise of late presentation of HIV infection for patients with newly diagnosed HIV/AIDS was found in Suzhou, from 2017 to 2020. It is different from most studies. In recent years, there had been decreasing trends among late presenters in Turkey (14), Kinshasa of DRC (15), and the East of England (16). In addition, trends in late presentation of HIV infection remained relatively stable in Australia (17), Panama (18), and Guangxi of China (12). Over the past dozen years, several HIV testing promotion measures and strategies have been widely used in medical institutions in China. For example, patients requiring surgery or transfusion have to receive HIV testing. Some inpatients, dental patients and endoscopy patients are also required to receive HIV testing. The expanded HIV testing strategy has resulted in a large number of late-stage HIV/AIDS being detected. This may be one reason for the rise of late presentation of HIV infection. Another possible explanation could be that HIV prevention and testing efforts in some population had been weakened or neglected, such as retirees, married, migrant population and people with low education.

In our study, high percentages of late presentation were shown over the time, with more than half each year. It is higher than that in some countries of Europe (14, 1922), Australia (17), and the United States (23), lower than that in Panama (18), South Africa (24, 25), Ethiopia (26), and Guangxi of China (12), and similar to that in Iran (27). It is important to notice that higher percentages of late presentation were indicated among people over 40 years old, retirees, farmers, married, heterosexuals, and people registered in Suzhou in our study. Targeted interventions addressed to specific subgroups in the population are needed.

Late presentation of HIV infection is associated with an increase in AIDS and AIDS-related deaths, particularly in the first year after diagnosis. Reducing late presentation of HIV infection is considered a public health priority and continues to be a great challenge (28). It is clear that late presentation is significantly associated with lack of recent testing. Therefore, earlier testing for HIV is considered the best measure. Given the priority of the Chinese government's response to HIV epidemic among men who have sex with men (MSM) (e.g., expanding HIV testing, Web-based HIV testing, increasing coverage of care and treatment), our observed percentage of late presentation among MSM was lower than that among heterosexuals (29). It indicates that current HIV testing strategies have not been effectively reaching certain segments of population that need to be tested or tested more frequently. HIV testing coverage needs to be expanded further. In order to achieve this goal, the US CDC and the US Preventive Services Task Force recommended that clinicians screen adolescents and adults aged 15 to 65 years for HIV infection (30).

Consistent with most studies (12, 14, 15, 20, 21, 27), age was significantly associated with late presentation of HIV infection in this study. Late presenters were more elderly. This might be due to several reasons. Because of the particularity of HIV infection, HIV symptoms in old people were misjudged as other illnesses, or the elderly were ignored and hard to receive targeted HIV prevention efforts, such as testing. In some areas of China, HIV testing has been incorporated into the physical examination of the elderly in basic public health services. It was reported that, during the year preceding the diagnosis, nearly half of the patients had sought medical advice owing to the presence of clinical indicators that should have led to HIV testing. Of those, 15% were classified as missed opportunities for earlier HIV diagnosis because testing was not performed (31). Besides, psychological factors, such as stigma, are more common in older people, which may also impede access to health services including HIV testing. Different from some studies (12, 18, 27), we did not observe any impact of gender.

In some studies (17, 32), there may be higher late presentation of HIV infection among migrant people compared with permanent residents. On the contrary, the patients with newly diagnosed HIV/AIDS who were Suzhou registered residents, were more likely to be late presentation in our study. The possible reason was the same as that of increasing late presentation. Due to more medical resources for registered residents, more patients with newly diagnosed HIV/AIDS were continuously passively found through surgery, hospitalization, outpatient service, endoscopy, and so on. The patients with newly diagnosed HIV/AIDS who were from hospital were more likely to be late presentation compared with those from VCT clinics and investigations, because of passive testing. Hence, WHO consolidated guidelines on HIV testing services recommended demand creation of HIV testing services. Demand creation was defined as activities intended to improve an individual's knowledge and attitude, motivation and intention, and eventually decision and behavior to seek HIV testing services (33).

Through this study, we obtained real data in late presentation of HIV infection and possible factors associated with late HIV presentation among patients with newly diagnosed HIV/AIDS in Suzhou, China, which are very important for future HIV prevention and control, especially in reducing AIDS-related deaths. However, this study had several limitations. First, the details of the category of AIDS-defining event were unavailable among late presenters based on AIDS-defining event. Second, the patients of this study were from one city, thus leading to a selection bias. Still, the sample is representative because Suzhou has the largest number of patients in the province. Third, a limited number of variables were included in our study, as no additional questionnaire was conducted. Further study will focus on the knowledge of AIDS, attitude toward AIDS, the clinical symptoms and underlying diseases of patients.

Conclusions

This study showed a high percentage and a rise of late presentation of HIV infection among patients with newly diagnosed HIV/AIDS in Suzhou, China, from 2017 to 2020, which is a challenge for future prevention and control of AIDS. Targeted measures should be urgently implemented to reduce late HIV diagnosis.

Data availability statement

The raw data supporting the conclusions of this article will be made available by the authors, without undue reservation.

Ethics statement

Ethical review and approval was not required for the study on human participants in accordance with the local legislation and institutional requirements. Written informed consent to participate in this study was provided by the participants' legal guardian/next of kin.

Author contributions

HH, XY, and ZX contributed to conception and design of the study. HH, XY, KZ, and ZD organized the database. HH and ZX performed the statistical analysis. QS, DW, WH, and RT conducted laboratory testing. HH wrote the first draft of the manuscript. XY, ZX, and QS wrote the sections of the manuscript. All authors contributed to manuscript revision, read, and approved the submitted version.

Funding

This study was supported by the Research Program of Jiangsu Provincial Health Commission (Z2018039), Suzhou Key Technologies of Control and Prevention of Major Diseases and Infectious Diseases (GWZX201902), and Suzhou Key Medical Discipline Construction Project (SZXK202117).

Conflict of interest

The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.

Publisher's note

All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article, or claim that may be made by its manufacturer, is not guaranteed or endorsed by the publisher.

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Keywords: late presentation, associated factor, real-world data, China, HIV/AIDS

Citation: Xu Z, Shen Q, Wang D, Dong Z, Han W, Tian R, Zhou K, Ya X and Hu H (2023) Real-world data in late presentation of HIV infection in Suzhou, China: Results from four consecutive cross-sectional surveys, 2017–2020. Front. Public Health 11:1084840. doi: 10.3389/fpubh.2023.1084840

Received: 31 October 2022; Accepted: 30 January 2023;
Published: 21 February 2023.

Edited by:

Zhiliang Hu, Nanjing Second Hospital, China

Reviewed by:

Xinli Lu, Hebei Provincial Center for Disease Control and Prevention, China
Ping Ma, Tianjin Second People's Hospital, China

Copyright © 2023 Xu, Shen, Wang, Dong, Han, Tian, Zhou, Ya and Hu. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

*Correspondence: Xuerong Ya, yes Mzc1NzIzODAwJiN4MDAwNDA7cXEuY29t; Haiyang Hu, yes aHVoYWl5YW5nJiN4MDAwNDA7anNjZGMuY24=

These authors have contributed equally to this work

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